Forces & Speed Quiz - Retake

When forces are balanced, what happens to an object's motion?

• it will move to the left

• it will accelerate

• it's motion will not change

• it will move to the right

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

• 10 m/s

• 1000 m/s

• 100 seconds

• 10 seconds

What is speed?

• how far you go
• how much distance is covered over a period of time
• how fast you accelerate
• the change in the location of a object

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Which could be an example of an unbalanced force?

• A plate sitting on a dining table
• A ball at the top of a hill that is not moving
• Earth orbiting the Sun 
• A baseball that has been thrown to home plate.

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What force holds the planets in motion around the sun?

• Magnetic
• Electrical
• Gravitational
• Air Resistance

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If the net force is equal to zero, the forces acting on the object are

• balanced

• unbalanced

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What is the net force in this picture?

• 50 Newtons to the right
• 950 Newtons to the right
• 950 Newtons to the left
• 50 Newtons to the left

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Which one is balanced?

• top
• bottom
• both

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Motion is a change in ____.

• time

• speed

• velocity

• position

What is the average speed of the ball if it falls 40 meters 20 seconds?

• A.  20 m/s
• B.  10 m/s
• C.  0.5 m/s
• D.  2 m/s 

Tags

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