Kinetic, Gravitational and Elastic Potential Energy

What is potential energy?

• The energy an object has due to its position or condition.

• The energy an object has due to its motion.

• The energy an object has due to its chemical composition.

• The energy as object has due to its atomic structure.

When a rubber band is stretched, it has __________________ 
energy.

• Potential
• Kinetic
• Nuclear
• Thermal

An ideal spring has a spring constant of 25 N/m. Determine the force required to elongate/displace the spring by 2.0 meters.

• 13 N

• 25 N

• 50 N

• 130 N

An ideal spring is requires 30 Newtons of force in order to stretch 5.0 meters. Determine the spring constant (k).

• 0.17 N/m

• 6.0 N/m

• 75 N/m

• 150 N/m

A catapult with a spring constant of 1.0 × 10⁴ newtons per meter is required to launch an airplane from the deck of an aircraft carrier. The plane is released when it has been displaced 0.50 meter from its equilibrium position by the catapult. The energy acquired by the airplane from the catapult during takeoff is approximately

• 1.3 × 10³ J

• 2.0 × 10⁴ J

• 2.5 × 10³ J

• 1.0 × 10⁴ J

A 10-newton force is required to hold a stretched spring 0.20 meter from its rest position. What is the potential energy stored in the stretched spring?

• 1.0 J

• 2.0 J

• 5.0 J

• 50 J

What is the potential energy that a book is 4 m from the floor and has a mass of 5 kg?

• 196 J

• 98 J

• 49

• 24.5 J

What is the energy of an object that has a mass of 0.6 kg and is moving at 3 m/s?

• .27 J

• .54 J

• 2.7 J

• 5.4 J

Calculate the potential energy for a 2 kg basketball dropping from a height of 3.5 meters. (Remember gravity is 9.8 m/s/s)

• 7 Joules

• 6.5 Joules

• 17.2 Joules

• 68.6 Joules

Describe how the gravitational potential energy of an object depends on its height.

• As height increases the GPE also increases.

• As height decreases the GPE also increases.

• As height increases the GPE also decreases.

• As height decreases the GPE also decreases.