A table tennis ball has a mass of about 0.00245 kg. Suppose the ball is hit across the table with a velocity of
4.0 m/s. What is the ball's kinetic energy?

Explanation:

The kinetic energy of an object can be found by using the formula

where

m is the mass

v is the velocity

From the question we have

We have the final answer as

Hope this helps you

truck y has a greater velocity than truck x.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg