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Questions (13)
Two crates are submerged under water. The crates are identical in size, but Crate A is filled with iron and Crate B has only air
9 answers
120 views
Read the scenario.
A cyclist is riding his bike at a constant speed of 5 m/s, and experiences a frictional force between the bike
42 answers
154 views
A ball with a density of 1100 kg/m3 is submerged in two liquids: water (ρ = 1000 kg/m3) and honey (ρ = 1400 kg/m3). What will
11 answers
85 views
A box is immersed in a liquid and accelerates upward. Which force diagram best represents the forces acting on the box as it’s
7 answers
99 views
Study the image
A girl holds an apple with two equal opposing forces: an upward force of hand on apple, and downward force of
9 answers
111 views
If two objects with different masses are pushing each other, which exerts the greater force?
Responses It is impossible to tell
5 answers
109 views
An apple is thrown upwards. Which of the following force diagrams best models the forces acting on the apple after it has left
5 answers
125 views
A puck is sliding along a frictionless surface at constant velocity.
Which of the following choices correctly models the forces
7 answers
137 views
Study the scenario.
A car is moving along a frictionless surface with a speed of 2 m/s to the left. You and your friend each come
1 answer
96 views
Exam 2
9 of 319 of 31 Questions Question Study the image of two people pushing on opposing sides of a dog house at the same time.
3 answers
78 views
Study the scenario.
An object is at rest. At five seconds, someone comes over and pushes the object forward with a force of 10 N.
3 answers
112 views
A ball moves along a smooth metal surface while an identical ball moves along concrete.
Which surface exerts a smaller amount of
1 answer
70 views
Read the scenario.
A cyclist is riding his bike at a constant speed of 5 m/s, and experiences a frictional force between the bike
3 answers
111 views
Answers (47)
Study the scenario. A ball with a weight of 0.5 N is submerged under water and then released. There is a net force of 5 N upwards. How much buoyant force is acting on the ball? Responses 5.5 N upward 4.5 N upward 2.5 N upward 5 N downward
A box is immersed in a liquid and accelerates upward. Which force diagram best represents the forces acting on the box as it’s accelerating upwards? Responses A box with two forces. A buoyant force vector (water on box) points up. A longer gravitational
A balloon filled with some liquid is inflated and immersed under water. The balloon remains at rest under water. What would happen if the volume of the balloon decreased while the mass remained the same? Responses The balloon would sink and accelerate
A ball with a density of 1100 kg/m3 is submerged in two liquids: water (ρ = 1000 kg/m3) and honey (ρ = 1400 kg/m3). What will the ball do? Responses We do not have enough information because we need to know the mass of the ball in order to determine
Two crates are submerged under water. The crates are identical in size, but Crate A is filled with iron and Crate B has only air inside. Which crate has a greater buoyant force acting on it? Responses Both crates have the same amount of buoyant force
A 100 kg boat is floating in water. Half of the boat is submerged under water. What is the weight of the boat? Responses 50 kg 0 N 980 N 490 N
how did you get that answer?
A liquid is moving through a pipe. If the speed of the liquid decreases, what happens to the pressure within the liquid? Responses Only density affects pressure, so pressure stays the same. The pressure within the liquid decreases. The pressure within the
A box exerts 10,000 Pa of pressure on the ground. If the box weighs 1000 N, how much area is in contact with the ground? Responses 11,000 m^ 2 10 m^2 10,000,000 m^2 0.1 m^2
A person is standing on ice. He throws a snowball with a force of 4 N to the right, while the snowball pushes the person with a force of 4 N to the left. What is the net force on the person? Responses 0 N 8 N 4 N, left 4 N, right
If a bat with a mass of 5 kg and acceleration of 2 m/s2 hits a ball whose mass is 0.5 kg in the forward direction, what is the reaction force of the ball on the bat? Responses 10 N, backward 0.5 N, upward 0 N, forward 10 N, forward
A box is at rest on the floor. Which of the following force diagrams best represents the action-reaction pair of forces between the box and the floor? Responses A box with one force: a force vector (floor on box) pointing up. A box with equal and opposing
Study the image A girl holds an apple with two equal opposing forces: an upward force of hand on apple, and downward force of Earth on apple. Which of these correctly explains whether this image is an example of Newton’s third law, and why? Responses
A child pushes a desk with a force of 15 N to the right. The desk accelerates to the right. Which of the following statements correctly represents Newton’s third law and the interaction between the child and desk? Responses The desk did not exert any
A 50 kg skydiver is falling downwards and accelerating 6 m/s2 down. What is the net force on the skydiver? Responses 300 N, up 300 N, down 8.3 N, down 500 N, up
Study the scenario. A toy car is pushed across the floor with a force of 4 N to the right. There is 1 N of friction acting on the car to the left. What is the net force acting on the car? Responses 5 N 0.25 N 3 N 4 N
An apple is thrown upwards. Which of the following force diagrams best models the forces acting on the apple after it has left the person’s hand and while it’s moving upwards? Responses An apple with two opposing forces. A vector showing throw force
Study the image. A couch with two opposing forces. A friction force vector (surface on couch) marked 5 N points to the left. A push force vector (person on couch) marked 20 N points right. If the couch has a mass of 45 kg, determine its acceleration.
You push a ball with a net force of 2 N and it accelerates. What happens if you exert 2 N of net force on an object that has 3 times the mass? Responses The object will accelerate 1/3 as much because if you apply the same net force but increase the mass,
A puck is sliding along a frictionless surface at constant velocity. Which of the following choices correctly models the forces acting on the puck? Responses A puck with one force vector to the right: initial push (person on puck). A puck with three force
A puck is sliding along a frictionless surface at constant velocity. Which of the following choices correctly models the forces acting on the puck? Responses A puck with one force vector to the right: initial push (person on puck). Arrows and labels added
Study the image of two people pushing on opposing sides of a dog house at the same time. Two people pushing on a doghouse. Force vector arrows are marked 25 N upward and 25 N downward; 10 N to the left and 10 N to the right. Modified by FlipSwitch.
Study the scenario. An object is at rest. At five seconds, someone comes over and pushes the object forward with a force of 10 N. After it is pushed, the object is still at rest. Which of the following choices describes how static equilibrium could have
A ball moves along a smooth metal surface while an identical ball moves along concrete. Which surface exerts a smaller amount of frictional force on the ball? Responses The concrete surface exerts less frictional force on the ball because there are fewer
needs to be one of the answers shown
A person is standing on ice. He throws a snowball with a force of 4 N to the right, while the snowball pushes the person with a force of 4 N to the left. What is the net force on the person? Responses 4 N, right 4 N, right 0 N 0 N 8 N 8 N 4 N, left
A box exerts 10,000 Pa of pressure on the ground. If the box weighs 1000 N, how much area is in contact with the ground? Responses 0.1 m2 0.1 m 2 10 m2 10 m 2 10,000,000 m2 10,000,000 m 2 11,000 m2
A liquid is moving through a pipe. If the speed of the liquid decreases, what happens to the pressure within the liquid? Responses The pressure within the liquid decreases. The pressure within the liquid decreases. Only density affects pressure, so
A 100 kg boat is floating in water. Half of the boat is submerged under water. What is the weight of the boat? Responses 50 kg 50 kg 0 N 0 N 980 N 980 N 490 N
Two crates are submerged under water. The crates are identical in size, but Crate A is filled with iron and Crate B has only air inside. Which crate has a greater buoyant force acting on it? Responses There is no way of knowing which object has a greater
A balloon filled with some liquid is inflated and immersed under water. The balloon remains at rest under water. What would happen if the volume of the balloon decreased while the mass remained the same? Responses The balloon would float and accelerate
needs to be one of the answers shown
Study the scenario. A ball with a weight of 0.5 N is submerged under water and then released. There is a net force of 5 N upwards. How much buoyant force is acting on the ball? Responses 5 N downward 2.5 N upward 5.5 N upward 4.5 N upward
Needs to be one of the answers
A box is immersed in a liquid and accelerates upward. Which force diagram best represents the forces acting on the box as it’s accelerating upwards? Responses A box with two forces. A buoyant force vector (water on box) points up. A shorter gravitational
If a bat with a mass of 5 kg and acceleration of 2 m/s2 hits a ball whose mass is 0.5 kg in the forward direction, what is the reaction force of the ball on the bat? Responses 0.5 N, upward 10 N, forward 10 N, backward 0 N, forward
A box is at rest on the floor. Which of the following force diagrams best represents the action-reaction pair of forces between the box and the floor? Responses A box with opposing forces. A longer force vector (floor on box) points up, and a shorter force
A child pushes a desk with a force of 15 N to the right. The desk accelerates to the right. Which of the following statements correctly represents Newton’s third law and the interaction between the child and desk? Responses The desk exerted slightly less
If two objects with different masses are pushing each other, which exerts the greater force? Responses It is impossible to tell which object exerts the greater force unless we know which object accelerates. The object with the smaller mass exerts the
A 50 kg skydiver is falling downwards and accelerating 6 m/s2 down. What is the net force on the skydiver? Responses 300 N, up 500 N, up 300 N, down 8.3 N, down
thx can u help with this one? Study the scenario. A toy car is pushed across the floor with a force of 4 N to the right. There is 1 N of friction acting on the car to the left. What is the net force acting on the car? Responses 3 N 4 N 0.25 N 5 N
Study the image. A couch with two opposing forces. A friction force vector (surface on couch) marked 5 N points to the left. A push force vector (person on couch) marked 20 N points right. If the couch has a mass of 45 kg, determine its acceleration.
You push a ball with a net force of 2 N and it accelerates. What happens if you exert 2 N of net force on an object that has 3 times the mass? Responses The object will accelerate 3 times as much because if you apply the same net force and increase the
it has to be one of the responses shown.
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A large box remains at rest on a sidewalk while a person pushes on it with a force to the right. Which of the following choices shows the correct force diagram for this situation? Responses A man on the left side of a box on a sidewalk. Normal force vector
Read the scenario. A cyclist is riding his bike at a constant speed of 5 m/s, and experiences a frictional force between the bike and sidewalk of 100 N. The cyclist then changes his speed to 10 m/s. What effect does this increase in speed have on the
