Unit Four Practice Problems

Front

The momentum of an object depends upon the object's ___________ & ___________.

Back

mass and velocity

Front

At which point is potential energy greatest?

Back

W

Front

If you do 40 joules of work lifting a 10N box, how high is the shelf you move it to?

Back

4m

Front

The equation to calculate momentum is

Back

p = m x v

Front

Gravitational potential energy depends on the ________ and ________ of the object.

Back

Height and mass

Front

What is the formula for gravitational potential energy?

Back

PE = m x g x h

Front

What is the unit of work?

Back

Joule (J)

Front

What does 'g' represent in the gravitational potential energy formula?

Back

Acceleration due to gravity (approximately 9.81 m/s² on Earth)

Front

What is the relationship between mass and velocity in momentum?

Back

Momentum increases with an increase in either mass or velocity.

Front

What is kinetic energy?

Back

The energy an object possesses due to its motion.