Unit 2 - Motion Review #1

Front

What is momentum?

Back

Momentum is defined as mass in motion.

Front

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

Back

The bike has more momentum.

Front

What causes a rolling ball to eventually stop?

Back

Friction and air resistance cause the ball to eventually stop.

Front

What does Newton's First Law state about motion?

Back

An object in motion stays in motion unless acted upon by an external force.

Front

When two objects collide, what is the relationship between their momentum before and after the collision?

Back

The momentum before the collision is equal to the momentum after the collision.

Front

How do you calculate momentum?

Back

Momentum (p) is calculated using the formula: p = mass (m) × velocity (v).

Front

If a 0.250 kg cart is moving at 0.400 m/s, what is its momentum?

Back

The momentum is 0.1 kg-m/s.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the unit of momentum?

Back

The unit of momentum is kg-m/s.

Front

What happens to the momentum of an object if its mass doubles while its velocity remains constant?

Back

The momentum of the object also doubles.