Question

The kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s is?

Answer 1

Answer: The kinetic energy of the ball is 25 J

Explanation:

Kinetic energy is defined as the energy which is possessed due to its motion.

It is also defined as the half of the product of mass of the object and square of the velocity of the object.

Mathematically,

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

where,

$E_K$ = kinetic energy of ball  

m = mass of the ball = 0.5 kg

v = velocity of ball = 10 m/s

Putting values in above equation, we get:

$E_K=\frac{1}{2}\times 0.5\times (10)^2\\\\E_K=25J$

Hence, the kinetic energy of the ball is 25 J

Answer 2

KE= .5*M*V^2
.5*.5*10^2
=25Joules