Question

What is the speed of a 0.145kg baseball if it’s kinetic energy is 109 j

Answer 1

Explanation:
The relationship for Kinetic Energy
K
is:
K
=
1
2
m
v
2

so:
109
=
1
2
(
0.145
)
v
2

so:
v
=
√
2
⋅
109
0.145
=
38.7
≈
39
m
s