BasPhySciPhys Final Review Practice 1

Front

What happens when two forces of equal magnitude act in opposite directions?

Back

They will not move at all.

Front

Calculate the momentum of a 55-kg running back moving westward at 10 m/s.

Back

550 kg·m/s, west

Front

What is the average speed of a runner who completes a 100 meter dash in 10 seconds?

Back

10 m/s

Front

What type of friction occurs when an object rolls over a surface?

Back

Rolling friction.

Front

What is an example of an unbalanced force?

Back

An object being pushed harder on one side than the other.

Front

Define momentum.

Back

Momentum is the product of an object's mass and its velocity.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from moving.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change an object's motion, while unbalanced forces cause an object to accelerate.

Front

What is the unit of momentum?

Back

kg·m/s.