900J
Explanation:
Well, kinetic energy is expressed through the equation:
KE
=
1
2
m
v
2
m
is the mass of the object in kilograms
v
is the velocity of the object in meters per second
So, we plug in the values, which are
m
=
0.02
kg
v
=
300
m/s
And we get,
KE
=
1
2
⋅
0.02
kg
⋅
(
300
m/s
)
2
=
1
2
⋅
0.02
kg
⋅
90000
m
2
/s
2
=
900
kg m
2
/s
2
=
900J
