Physics Sem 1 Review part 2

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object has due to its height above the ground.

Front

True or False: Heavier objects free fall faster than lighter objects.

Back

False

Front

What type of energy does a 5 kg ball have just before it reaches the ground when dropped from a height of 2 m?

Back

Kinetic Energy

Front

Calculate the centripetal force for a softball pitcher rotating a ball with a velocity of 3 m/s if the ball weighs 0.12 kg and her arm is 0.65 meters long.

Back

1.66 N

Front

What is the equation for gravitational potential energy?

Back

PE_g = mgh

Front

Define kinetic energy.

Back

Kinetic energy is the energy an object possesses due to its motion.

Front

What is the formula for kinetic energy?

Back

KE = 1/2 mv² where m is mass and v is velocity.

Front

What is centripetal force?

Back

Centripetal force is the force required to keep an object moving in a circular path.

Front

What is the relationship between mass and gravitational potential energy?

Back

Gravitational potential energy increases with an increase in mass.

Front

What happens to potential energy as an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases.