Question

A ball is moving at a speed of 6.70 m/s. If the kinetic energy of the ball is 3.10 J, what is the mass of the ball?​

Answer 1

Answer:

0.14 kg

Explanation:

The mass of the ball can be found by using the formula

$m = \frac{2k}{ {v}^{2} }$

v is the velocity

k is the kinetic energy

From the question we have

$m = \frac{2(3.10)}{ {6.70}^{2} } = \frac{6.20}{44.89} \\ = 0.138115...$

We have the final answer as

0.14 kg

Hope this helps you