Question

What is the kinetic energy of a 24-kg mass that is moving with a velocity of 2 m/s?

Answer 1

Answer:

1/2mv^2

1/2*24*2^2

answer=48

Answer 2

Answer:

48 J

Explanation:

Kinetic energy can be found using the following formula:

$KE=\frac{1}{2}mv^2$

where m is the mass in kilograms and v is the velocity in m/s.

We know the mass is 24 kilograms and the velocity is 2 m/s Therefore, substitute 24 in for m and 2 in for v.

$KE=\frac{1}{2}*24*2^2$

Evaluate the exponent first. 2^2 is the same as multiply 2, 2 times.

2^2=2*2=4

$KE=\frac{1}{2}*24*4$

Multiply 24 and 4

$KE=\frac{1}{2} *96$

Multiply 96 and 1/2, or divide 96 by 2.

$KE=48$

Add appropriate units. Kinetic energy uses Joules, or J

$KE=48 Joules$

The kinetic energy is 48 Joules