An object has kinetic energy of 324 J. If its speed is 9 m/s, what is its mass?
A) 8
B) 36
C) 1620
D) 324

Name: An object has kinetic energy of 324 J. If its speed is 9 m/s, what is its mass? A) 8 B) 36 C) 1620 D) 324
Brand: Quizplus
Rating: 4.9 (43 reviews)

Question

Quizplus · Accepted Answer

The kinetic energy (KE) of an object is given by the formula KE = 1/2 m v^2, where m is the mass of the object and v is its velocity. Rearranging the formula to solve for mass, we get m = 2KE / v^2. Plugging in the given values, m = 2*324 J / (9 m/s)^2 = 648 / 81 = 8 kg.

An Object Has Kinetic Energy of 324 J