The correct answer is: Box B has more mass and takes more force to lift.
Since the student can lift box A but not box B, it indicates that the force required to lift box B is greater due to its greater mass.
A student is moving boxes. Box A and box B are the same size and shape. The student can lift box A, but not box B. What is the difference between the boxes? (1 point)
• Box B has more mass and takes more friction to lift.
• Box B has more mass and takes more force to lift.
• Box B has more mass and takes less force to lift.
• Box A has more mass and takes less friction to lift.
7 answers
Why is a book resting on a table in a state of equilibrium? (1 point)
• Gravity is a net force acting on the book in a downward direction.
The book's weight and the upward force the table exerts on the book have equal magnitude but opposing directions.
The book and the table both have acceleration (due to gravity) of 9.8 m/s/s.
The book and the table have the same weight
• Gravity is a net force acting on the book in a downward direction.
The book's weight and the upward force the table exerts on the book have equal magnitude but opposing directions.
The book and the table both have acceleration (due to gravity) of 9.8 m/s/s.
The book and the table have the same weight
The correct answer is: The book's weight and the upward force the table exerts on the book have equal magnitude but opposing directions.
In a state of equilibrium, the net force acting on an object is zero. In this case, the downward force of gravity (the weight of the book) is balanced by the upward normal force exerted by the table, leading to a net force of zero and thus a state of equilibrium.
A boy is holding an apple
Why doesn't gravity cause the apple to fall to the ground?
(1 point)
The force of his hand pushes up on the apple with greater magnitude
O than the force of gravity, which pulls down on the apple. The two
forces are balanced, so the apple doesn't fall.
The force of his hand pushes up on the apple with equal magnitude
• to the force of gravity, which pulls down on the apple. The two forces are unbalanced, so the apple doesn't fall.
The force of his hand pushes up on the apple with greater magnitude
O than the force of gravity, which pulls down on the apple. The two
forces are unbalanced, so the apple doesn't fall.
The force of his hand pushes up on the apple with equal magnitude O to the force of gravity, which pulls down on the apple. The two forces are balanced, so the apple doesn't fall.
Why doesn't gravity cause the apple to fall to the ground?
(1 point)
The force of his hand pushes up on the apple with greater magnitude
O than the force of gravity, which pulls down on the apple. The two
forces are balanced, so the apple doesn't fall.
The force of his hand pushes up on the apple with equal magnitude
• to the force of gravity, which pulls down on the apple. The two forces are unbalanced, so the apple doesn't fall.
The force of his hand pushes up on the apple with greater magnitude
O than the force of gravity, which pulls down on the apple. The two
forces are unbalanced, so the apple doesn't fall.
The force of his hand pushes up on the apple with equal magnitude O to the force of gravity, which pulls down on the apple. The two forces are balanced, so the apple doesn't fall.
The correct answer is: The force of his hand pushes up on the apple with equal magnitude to the force of gravity, which pulls down on the apple. The two forces are balanced, so the apple doesn't fall.
In this scenario, the upward force exerted by the boy's hand counteracts the downward force of gravity on the apple, resulting in a balanced force situation that keeps the apple from falling.
A student walks east 100 meters in 2 minutes. She then walks north 200 meters in 4 minutes. Which statement is true? (1 point)
• Her velocity is constant because her speed is constant.
• Her velocity changes because her direction changes.
• Her velocity changes because her speed varies.
• Her velocity is constant because her direction is constant.
• Her velocity is constant because her speed is constant.
• Her velocity changes because her direction changes.
• Her velocity changes because her speed varies.
• Her velocity is constant because her direction is constant.
The correct answer is: Her velocity changes because her direction changes.
Velocity is a vector quantity that includes both speed and direction. Since the student changes direction when she walks from east to north, her velocity changes even if her speed might be constant during each segment of the walk.