Physics Unit Test

What is the formula to calculate Kinetic Energy?

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What is the net force in this example?

• 200 N left

• 125 N right

• 50 N left

• 75 N right

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Students are playing tug-of-war. If group B pulls the rope to the right with a force of 400 N and group A pulls the rope to the left with a force of 250 N, what will happen to the ribbon in the middle of the rope?

• The ribbon will move to the left and group A will win the tug-of-war.

• The ribbon will move to the right and group B will win the tug-of-war.

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At segment O-A the bus is _________________.

• at rest

• returning to original position at a constant speed

• moving away at a constant speed

• accelerating

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According to the law of inertia, a soccer ball will

• always move in the opposite direction of the force acting upon it.

• remain at rest or in motion until a force like a kick acts upon it.

• never accelerate.

• stay in motion forever.

A force is ____.

• a push or pull that can cause movement

• a magnet

• when someone does not work

• what Darth Vader loses in Star Wars

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If there are two forces going in the same direction how would you find the net force?

• Subtract

• Add

• Divide

• Multiply

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Look at the diagram. What would be the direction of the motion ?

• movement to the left

• movement to the right

• no movement

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If a person is picking up a book with the force of 50 N and the gravity is pulling down with 15 N, what is the net force?

• 50 N dup

• 35 N up

• 65 N up

• 35 N down

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What is the net force?

• 65 N left

• 65 N right

• 35 N left

• 35 N right

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