ACPS Forces, Motion Mid-Unit Test

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While dribbling a basketball downward as shown, what is the interaction as part of Newton's third law?

• My hand pushes down on the ball with 3 N force and the ball pushes up on my hand with 3 N
• My hand pushes down on the ball with a 3 N force and the ball with 2 N accelerates downward
• My hand pushes down on the ball with a force of 2N and the ball responds by pushing up with a force of 3N

Look at the diagram below. What NEW force could be added to make the object have no change in motion?

• 1 N right
• 11 N right
• 5 N right
• 7 N left

Look at the diagram below. Object 2 has a mass of 2 kg. What is the acceleration on object 2?

• 0.4 m/s2
• 10 m/s2
• 2.5 m/s2 left
• 5 N left

If a book weighing 6.71 N rests on a table, what is the normal force that the earth pushes up onto the book?

• 0N
• 68.5 kg
• 6.71 N up
• 65.74 N up

Which of the following would experience the greatest change in motion?

• Fnet = 10 N, m=5 kg
• Fnet =75 N, m=10 kg
• Fnet=10 N, m=0.79 kg
• Fnet=75 N, m=20 kg

Which of the following would be experiencing a balanced force?

• B and E
• A An object moving at a constant speed moving around a curve
• B An object moving straight at a constant velocity
• C An object accelerating to the right
• D An object accelerating to the left

Which has the net force moving right with the most acceleration to the right? All boxes have the same mass

• A
• B
• C
• D

Which statement best describes what must happen in order for a person to lift an object?

• The force of gravity must be greater than the mass of the object.
• The mass of the object must be greater than the force of gravity.
• The force of gravity must be greater than the upward pull or push on the object.
• The upward pull on the object must be greater than the downward force of gravity.

A ball is motionless on top of a table. Why is the ball motionless?

• No force is being exerted on the ball to make it move.
• The ball’s force on the table is greater than the table’s force on the ball.
• The frictional force on the ball keeps it from moving.
• The mass of the ball is too large for any force to move it.