Question

What’s the velocity of a ball falling with 100 joules of kinetic energy and a mass of 2 kilograms?

Answer 1

K.E.= 1/2 mv²
100 = 1/2 * 2 * v²
v² = 100
v = √100
v = 10

In short, Your Answer would be 10 m/s

Hope this helps!

Answer 2

10m/s

Step-by-step explanation:

Kinetic energy is defined as the energy possessed by a body by virtue of its motion. Mathematically,

Kinetic energy = 1/2mv² where;

m is the mass of the body = 2kg

v is the velocity of the body = ?

Since kinetic energy = 100Joules

We will substitute the known values into the formula to get the velocity. This gives;

100 = 1/2(2)v²

100 = v²

Taking the square root of both sides we will have;

√v² = √100

v = 10m/s

This shows that the velocity of the body is 10m/s