Question

a ball of mass 50 grams moves with a velocity of 100m/s.find its kinetic energy​

Answer 1

Answer:

Kinetic energy = 250 J

Step-by-step Explanation:

Given :

Mass of a ball = 50g

Velocity of the ball = 100m/s

To find :

The kinetic energy

Taken :

To find the kinetic energy use this formula -:

$\boxed{\sf{K.E.=\dfrac{1}{2}m{v}^{2}}}$

Where,

K.E. = Kinetic energy

m = Mass

v = Velocity

Solution :

$:\implies\sf{K.E.=\dfrac{1}{\cancel{2}}\times\cancel{0.05}kg\times{100m/s}^{2}}$

Converted gram into kilogram

$:\implies\sf{K.E.=0.025kg\times(100\times100)m/s}$

$:\implies\sf{K.E.=0.025kg\times10000m/s}$

$:\implies\sf{K.E.=250 J}$

So , the kinetic energy is 250 joules .