Energy Types and Transformations Practice Test

Front

What is Total Mechanical Energy?

Back

Total Mechanical Energy is the sum of Potential Energy and Kinetic Energy in a system.

Front

If Total Mechanical Energy is 50J and Potential Energy is 40J, what is the Kinetic Energy?

Back

10J

Front

What two factors does Kinetic Energy depend on?

Back

Kinetic Energy depends on the mass and speed (or velocity) of the object.

Front

How does the height from which an object is dropped affect its Kinetic Energy?

Back

The higher the object is dropped from, the greater its Kinetic Energy will be just before it hits the ground.

Front

If two bowling balls of equal mass are dropped from different heights, how will their Kinetic Energies compare?

Back

The ball dropped from the greater height will have more Kinetic Energy.

Front

What is the formula for calculating Kinetic Energy?

Back

Kinetic Energy (KE) = 1/2 * mass (m) * speed (v)^2.

Front

What is the weight of an object in terms of physics?

Back

Weight is the force exerted by gravity on an object, measured in newtons (N).

Front

If a crane does 62,500 J of work to lift a boulder, how do you find the weight of the boulder?

Back

Weight = Work done / Distance lifted.

Front

If 4000J of energy is transferred and 2500J is usefully stored, how much energy is wasted?

Back

1500J

Front

What is Potential Energy?

Back

Potential Energy is the energy stored in an object due to its position or state.