Question

the kinetic energy of an object of mass cm2 moving with
a velocity of 5 m/s is 25 J. What will be its kineatic
energy when its velocity is doubled? what will be its kinetic
energy when it's velocity is increased three times.​

Answer 1

Answer:

Explanation:here is your answer please mark me as brainliest

Answer 2

Answer:  225 J

Explanation: The K.E (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 joules/J