Types of Energy: Practice Assessment

As an object falls in a gravitational field, its speed increases. This is an example of potential energy transforming into what?

• A.chemical potential energy

• electrical potential energy

• elastic potential energy

• kinetic energy

A friend claims that there are just two forms of energy: kinetic energy and gravitational potential energy. What is wrong with your friend's statement?

• There are only three types of energy.

• There is only one type of energy.

• There are only four types of energy.

• There are many more types of energy.

Which of the following is not an example of potential energy?

• A.chemical energy

• gravitational energy

• thermal energy

• electrical energy

Which of the following best explains why an explosive charge in a cannon can cause a cannonball to fly out of the cannon with a high velocity?

• because chemical potential energy can convert to gravitational potential energy

• because chemical potential energy can convert to kinetic energy

• because chemical potential energy can convert to sound energy

• because chemical potential energy can convert to electric potential energy

Chemical, gravitational, and elastic are examples of types of what?

• systems

• potential energy

• kinetic energy

• engines

A 2300 grams object has 15 Joules of kinetic energy. Calculate its speed.  $V=\sqrt{\frac{2E_k}{m}}$  

• 0.12 m/s

• 1.1 m/s

• 2.4 m/s

• 3.6 m/s

Calculate the kinetic energy of a 2.2 kg brick when it has a speed of 4.9 m/s.

• 1.2 J

• 17 J

• 26 J

• 220 J

A student hangs a wood block from a spring. The student pulls the block downwards so the spring is stretched and holds the block at rest. What type of energy does the wood not have?

• chemical potential energy

• gravitational potential energy

• kinetic energy

• elastic potential energy

Complete the following definition: potential energy is energy stored in a system due to its ________.

• velocity

• motion

• position

• acceleration

When an object moves in a gravitational field, its potential energy converts into what?

• elastic potential energy

• chemical potential energy

• kinetic energy

• electrical potential energy