Part 1 - Review

What is displacement in physics?

• The total distance traveled by an object

• The shortest distance from the initial to the final position of a moving object

• The time taken for an object to move from one point to another

• The speed of an object in a given direction

What is the formula for calculating average speed?

• Total distance divided by total time

• Total time divided by total distance

• Total distance multiplied by total time

• Total time minus total distance

What does a horizontal line represent on a position vs. time graph?

• The object is moving at a constant speed

• The object is accelerating

• The object is at rest

• The object is moving backward

What is Newton's First Law of Motion?

• An object at rest will stay at rest, and an object in motion will stay in motion, unless acted upon by a net force.

• An object will accelerate in the direction of the net force applied to it.

• For every action, there is an equal and opposite reaction.

• The force of gravity acts between all masses.

What is the formula for Newton's Second Law of Motion?

• F = ma

• F = m/a

• F = m + a

• F = a/m

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According to Newton's Second Law, if the mass of an object increases, what happens to the force required to accelerate it at the same rate?

• The force increases

• The force decreases

• The force remains the same

• The force becomes zero

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If the forces are equal, why does the bug accelerate more than the truck?

• The bug is more aerodynamic than the truck.

• The mass of the bug is much less than the mass of the truck.

• The truck is moving uphill.

• The bug has more friction with the air.

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What is mass?

• The force exerted on an object due to gravity.

• The amount of matter in an object.

• The volume of an object.

• The density of an object.

What is weight?

• The amount of matter in an object.

• The volume of an object.

• The force exerted on an object due to gravity.

• The density of an object.

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What is the weight of a 50 kg person on Earth?

• 490 N

• 185 N

• 80 N

• 50 N

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