Erica is competing in the shot put event at a track meet. She hurls a shot with a mass of 4 kilograms at a speed of 9 meters/second. The shot's kinetic energy is joules.

Question

Chemistry

Makena

10 July, 09:19

Erica is competing in the shot put event at a track meet. She hurls a shot with a mass of 4 kilograms at a speed of 9 meters/second. The shot's kinetic energy is joules.

+5

Answers (1)

Know the Answer?

Brenna Farley · Answer 1

We have: K. E. = mv² / 2

here, m = 4 Kg

v = 9 m/s

Substitute their values into the expression:

K. E. = (4) (9) ² / 2

K. E. = (4) (81) / 2

K. E. = 324 / 2

K. E. = 162 Joules

In short, Your Answer would be 162 J