Unit 4 - Impulse & Momentum

Front

True or False: Momentum is a vector quantity.

Back

True

Front

An object that has momentum can best be described as:

Back

having mass in motion.

Front

Calculate the change in momentum for a 5.0 kg object moving at 2.0 m/s encountering 20 N of resistance over 0.2 seconds.

Back

4.0 kg·m/s

Front

Calculate the impulse experienced by a 5.0 kg object moving at 2.0 m/s encountering 20 N of resistance over 0.2 seconds.

Back

4.0 N·s

Front

An impulse occurs when a ____ is acting upon an object for a given amount of _____ in order to cause a change in _____.

Back

force, time, momentum.

Front

Define impulse in physics.

Back

Impulse is the product of the average force acting on an object and the time duration over which it acts.

Front

What is the formula for momentum?

Back

Momentum (p) = mass (m) × velocity (v).

Front

What is the unit of momentum?

Back

The unit of momentum is kg·m/s.

Front

Explain the relationship between impulse and momentum.

Back

Impulse is equal to the change in momentum of an object.

Front

If a 10 kg object is moving at 3 m/s, what is its momentum?

Back

30 kg·m/s.