Acceleration is an object’s velocity’s rate of change.
Acceleration is _______________.(1 point)
Responses
An object’s speed in a specific direction
An object’s speed in a specific direction
An object’s velocity’s rate of change
An object’s speed when its motion is constant
An object’s speed when its motion is constant
An object’s direction’s rate of change
11 answers
What do unbalanced forces do?(1 point)
Responses
Unbalanced forces allow an object’s motion to stay the same.
Unbalanced forces allow an object’s motion to stay the same.
Unbalanced forces cannot change an object’s direction.
Unbalanced forces cannot change an object’s direction.
Unbalanced forces can make an object move in the opposite direction of the force that is applied.
Unbalanced forces can make an object move in the opposite direction of the force that is applied.
Unbalanced forces cause an object’s motion to change.
Responses
Unbalanced forces allow an object’s motion to stay the same.
Unbalanced forces allow an object’s motion to stay the same.
Unbalanced forces cannot change an object’s direction.
Unbalanced forces cannot change an object’s direction.
Unbalanced forces can make an object move in the opposite direction of the force that is applied.
Unbalanced forces can make an object move in the opposite direction of the force that is applied.
Unbalanced forces cause an object’s motion to change.
Unbalanced forces cause an object’s motion to change.
In a boat race, the boats all sail the same distance. In addition to the distance covered, what information is necessary to calculate the winner?(1 point)
Responses
Each boat’s size
Each boat’s size
The time each boat takes to get to the finish line
The time each boat takes to get to the finish line
The skill of each boat’s crew
The skill of each boat’s crew
The wind’s speed
Responses
Each boat’s size
Each boat’s size
The time each boat takes to get to the finish line
The time each boat takes to get to the finish line
The skill of each boat’s crew
The skill of each boat’s crew
The wind’s speed
The time each boat takes to get to the finish line.
The graphs below depict different cars moving on a straight road.
Image
Which graph shows a car moving with constant speed?
(1 point)
Responses
A
A
B
B
C
C
D
D
Skip to navigation
Image
Which graph shows a car moving with constant speed?
(1 point)
Responses
A
A
B
B
C
C
D
D
Skip to navigation
To determine which graph shows a car moving with constant speed, you would look for a straight line that has a constant slope. Since I can't see the graphs, I can guide you based on typical graph characteristics:
- A constant speed is represented by a straight line that does not curve.
- If the line is sloped, it means the speed is constant; if it curves, the speed is changing.
Please review the graphs and select the one that has a straight line. If you can describe the graphs, I can help you identify it more specifically!
Which choice represents velocity?(1 point)
Responses
4 g/mL
4 g/mL
15 km/hr west
15 km/hr west
12 m/s2
12 m/s2
35 m/s
Responses
4 g/mL
4 g/mL
15 km/hr west
15 km/hr west
12 m/s2
12 m/s2
35 m/s
The choice that represents velocity is 15 km/hr west.
Velocity is defined as speed in a specific direction, while the other options either represent mass density (4 g/mL), acceleration (12 m/s²), or speed without direction (35 m/s).
The graph below shows a cyclist’s velocity over a period of time.
1358540
Describe the cyclist’s acceleration.
(1 point)
Responses
The acceleration of cyclist is going down
The acceleration of cyclist is going down
The acceleration of the cyclist is constant and zero
The acceleration of the cyclist is constant and zero
The acceleration of the cyclist is going up
The acceleration of the cyclist is going up
The acceleration of the cyclist is constant and non-zero
The acceleration of the cyclist is constant and non-zero
Skip to navigation
1358540
Describe the cyclist’s acceleration.
(1 point)
Responses
The acceleration of cyclist is going down
The acceleration of cyclist is going down
The acceleration of the cyclist is constant and zero
The acceleration of the cyclist is constant and zero
The acceleration of the cyclist is going up
The acceleration of the cyclist is going up
The acceleration of the cyclist is constant and non-zero
The acceleration of the cyclist is constant and non-zero
Skip to navigation
To accurately describe the cyclist's acceleration based on the graph, it would be essential to see the graph itself. However, I can provide general guidance based on common scenarios:
- If the graph is a straight horizontal line: The acceleration of the cyclist is constant and zero (the velocity is not changing).
- If the graph is a straight line with a positive slope: The acceleration of the cyclist is constant and non-zero (the cyclist is accelerating consistently).
- If the graph is a straight line with a negative slope: The acceleration of the cyclist is going down (the cyclist is slowing down).
- If the graph curves upwards: The acceleration of the cyclist is going up (the cyclist is accelerating faster over time).
- If the graph curves downwards: The acceleration is decreasing (the cyclist is still accelerating but at a decreasing rate).
Please select the option that best corresponds to the behavior shown in your graph. If you describe the graph's shape, I can help confirm your choice!