Energy Equations Practice

This quiz uses the equations for kinetic energy, gravitational potential energy, and spring potential energy.

$E_k =\cfrac{1}{2}mv^2$

$E_g = mgh$

$E_s = \cfrac{1}{2}kx^2$

(Use g = 9.8 m/s² as the acceleration due to gravity to get your answers to match the quiz answers)

1. A 1200 kg car is going 37.9 m/s. How much kinetic energy does it have?
Round your answer to the nearest whole number.

Question 1 of 6

2. A car going 21.3 m/s has 801000 J of kinetic energy. What is the mass of the car in kg?
Round your answer to the nearest whole number.

Question 2 of 6

3. A 432.6 kg object is raised 285.8 m vertically. How many Joules of potential energy did the object gain?
Round your answer to the nearest 0.1 J.

Question 3 of 6

4. An object gains 1082810.8 J of potential energy as it is raised 345.5 m. What is the mass of the object?
Round your answer to the nearest 0.1 kg.

Question 4 of 6

5. An object gains 170021.4 J of potential energy as it is raised 43.2 m. What is the mass of the object?
Round your answer to the nearest 0.1 kg.

Question 5 of 6

6. A 2900 kg car has 621000 J of kinetic energy. What is its velocity in m/s?
Round your answer to the nearest 0.1 (one decimal place).

Question 6 of 6