Question

A meteorite weighing 1860N strikes the earth with a velocity of 45.2m/s. What is its kinetic energy? Write in SN to one decimal place.

When I plugged in (1/2)(1860N)(45.2m/s)^2, I got the answer 1.9e6, but it was incorrect. Please help. I'm really confused!

Answer 1

1.9e8

Answer 2

You need to change the 1860 N to kg by dividing it by 9.81 m/s^2

Answer 3

1/2(1860N/9.81m/s^2)(45.2m/s)^2
1.94E5 J