How much kinetic energy does a 0.30-kg stone have if it is thrown at $44 \mathrm {~m} / \mathrm { s } ?$
A)290 J
B)580 J
C)440 J
D)510 J

Question

Quizplus · Accepted Answer

The kinetic energy (KE) of an object can be calculated using the formula $ KE = \frac{1}{2}mv^2 $. For a 0.30-kg stone thrown at 44 m/s, $ KE = \frac{1}{2} \times 0.30 \, \text{kg} \times (44 \, \text{m/s})^2 = 290.4 \, \text{J} $, which rounds to 290 J.

How Much Kinetic Energy Does a 0 44 m/s?44 \mathrm {~m} / \mathrm { s } ?44 m/s?

How Much Kinetic Energy Does a 0 $44 \mathrm {~m} / \mathrm { s } ?$