Physics Bootcamp - Forces & Motion

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1 - A skydiver jumps out of a plane. Which of the following statements describes the forces on him before he opens his parachute

His weight is greater than the air resistance at first, but air resistance gradually increases, eventually equaling his weight.

His weight is greater than the air resistance at all times during his fall.

His weight and the air resistance on him are balanced until he opens the parachute

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2 - Michael is falling at a constant speed. Which one of these statements is correct?

His resultant force is zero

His velocity is changing

His momentum is increasing

He is accelerating

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3 - If you throw an object in space, why will it continue moving forever?

There is no air resistance in space to slow the object down

You are stronger in space

Objects feel lighter in space

There is a lot of empty space in space!

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4 - A motorbike is slowing down. Which of the following statements about the forces on the motorbike is true?

The driving force is less than the counter forces

The driving force is greater than the counter forces

The driving force is equal to the counter forces

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