Question

the kinetic energy of an of mass m moving with a velocity of 5m/s is 25J. What will be its kinetic energy when its velocity is doubled? What will be it's kinetic energy when it's velocity is increased three times​

Answer 1

Kinetic Energy of the object is 25 J.

So,

25=1/2*m*(5)2

Therefore, m=2 kg.

Now, when the velocity is doubled, velocity becomes=2*5=10 m/s(ms-1)

So,

K.E.=1/2*2*(10)2 =100 J.

Now, when the velocity is increased three times,the velocity will be=3*5=15m/s

Therefore, K.E.=1/2*2*(15)2 = 225 J.

Answer 2

Answer:

1. hope it helps you

Explanation:

so your mass would be 2kg and

by doubled kinetic energy is 100

by tripled kinetic energy is 225