Dynamics Unit Test

Front

What is Newton's 3rd Law of Motion?

Back

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

Front

What is the formula for calculating net force?

Back

Net Force = Force applied in one direction - Force applied in the opposite direction.

Front

If a 20 N force is applied to the right and a 5 N force is applied to the left, what is the net force?

Back

15 N to the right.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity (p = mv).

Front

Calculate the momentum of an object with a mass of 5 kg traveling at 60 m/s.

Back

300 kg.m/s.

Front

What is the formula for calculating work done?

Back

Work = Force x Distance.

Front

If Peter does 3,000 joules of work by moving an object 40 meters, what is the force applied?

Back

75 N.

Front

What is inertia?

Back

Inertia is the resistance of any physical object to any change in its velocity.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's 2nd Law, Force = Mass x Acceleration (F = ma).

Front

What happens to the momentum of an object when a net external force is applied?

Back

The momentum of the object changes over time.