HESI A2 test Physic - Linear Momentum And Impulse

Vector quantities, such as momentum, require which two characteristics to fully describe them?

Magnitude and direction

The tendency of an object in motion to remain in motion is referred to as which of the following?

Inertia

Which two quantities are needed to determine the momentum of an object?

Mass and velocity

A 2 kg basketball is thrown through the air northward with a velocity of 2 m/s. What is its momentum?

4 kg m/s north

A cyclist weighs 60 kg, and her bicycle weighs 6.8 kg. What is the momentum of the cyclist when riding her bike at 4 m/s southward?

267.2 kg m/s south

A 2 kg dog runs southwest at a velocity of 1.5 m/s. What is its momentum?

3.0 kg m/s southwest

A 1 kg soccer ball traveling at 1.25 m/s strikes a 10 kg gym bag and bounces back with a velocity of 0.5 m/s. How fast will the gym bag move?

0.075 m/s

A 45 kg bowling ball rolling at 0.75 m/s strikes a stationary 2.5 kg bowling pin and knocks it back with a velocity of 1.5 m/s. How fast will the bowling ball be moving?

0.67 m/s

A 0.25 kg phone drops off a table and falls with a velocity of 0.55 m/s and strikes a 0.75 kg book and bounces back with a velocity of 0.1 m/s. What is the velocity of the book after the phone strikes it?

0.15 m/s

A 900-kg car is traveling at 15 m/s. The driver of the car brakes and the speed is reduced to 5 m/s. What is the car’s change in momentum?

-9000 kg m/s

A 20 kg bicycle is accelerated from 3 m/s to 4 m/s. What is its change in momentum?

20 kg m/s

A 5 kg ball rolls down a hill at a velocity of 1.5 m/s. By the time it reaches the bottom of the hill, it is traveling with a velocity of 2 m/s. What is the change in the ball’s momentum?

2.5 kg m/s