Question

Any answers that are not whole numbers should be entered as a decimal rounded to the nearest tenth.

The kinetic energy of an object can be found using the following formula, where m is the mass of the object, v is the velocity, and K is the kinetic energy in units called joules.




A pushcart with a mass of 6 kilograms is moving at a velocity of 3 meters per second. The kinetic energy of the pushcart is ------

joules.

A wagon with a mass of 10 kilograms is moving at a velocity of 2 meters per second. The kinetic energy of the wagon is --------

joules.

Answer 1

1. 27 Joules

2. 20 Joules

Explanation:

1. KE = (1/2)m(v^2) = (0.5*6)(3^2) = 3^3 = 27J

2. KE = (1/2)m(v^2) = (0.5*10)(2^2) = 5*4 = 20J