Question

If a 0.02 kg rock has a kinetic energy of 36 j, then what is its velocity?

Answer 1

60

Step-by-step explanation:

Kinetic energy (KE) = 1/2 mv²

m = 0.02

KE = 36

so, 36 = 1/2 (0.02) v² = 0.01 v²

v² = 36/0.01

= 3600

v = √3600 = 60