Question

jim has a mass of 15 kilograms and is running on th eground with a velocity of 2.7 meters/second. What is jim's kinetic energy?

Answer 1

\[E_k = \frac{ mv^2 }{ 2 }\]

So mass is 15 kilograms, and the velocity is 2.7 m/s.
There are already the correct SI units so no conversation necessary, simply apply the formula:

\[E_k = \frac{ 15kg \times 2.7m/s }{ 2 } = \frac{ 40.5 }{ 2 } = 20.25J\]

Answer 2

Identify.

KE = 1/2 mv^2

m = 15 kg

v = 2.7 m/s

Find KE — see Iamgmg90's description.

Answer 3

kinetic energy=1/2mv ^{2}
=1/2*15*2.7*2.7=54.675J