Question

The kinetic energy of an object of mass m, moving with a velocity of 5 m/s is 25J

what will be its kinetic energy when its velocity is doubled?​

Answer 1

Answer:

hyyy

Explanation:

Using the formula for the kinetic energy we have :

K.E =1/2mv²

25 = 1 / 2 × 5²

m = 2kg

(i) Kinetic energy when velocity is doubled :

K.E = 1 / 2 mv²

= 1/ 2 × 2× 10²

= 100J

(ii) Kinetic energy when velocity is tripled :

K.E = 1/ 2mv²

= 1/ 2 × 2 × 15²

= 225J