Question

Which of the following has greater kinetic energy?

- A 20-tonne truck traveling at a speed of 30 m/s
-A 1.2g dust particle traveling at 150 km/s through space.

Answer 1

dust

Step-by-step explanation:

Do Ek = (1/2) m v² where m = mass, v = velocity

make sure to convert metric ton to kg and km to m

1000kg = 1 metric ton

1000m = 1 km