Question

88 Kinetic energy of a body moving with speed of 10 ms' is 30). if its speed becomes 30 m/s its K.E
will be:
a. 10J
b. 180 Jc. 90 J
d. 270 J
89 The power outnut​

Answer 1

Answer:

d is the right option

Explanation:

Answer 2

Answer:

Option D is the correct answer......

we know that,

Kinetic energy=1/2mv²

Here kE is directly proportional to the v²

KE1/KE2=v1²/v2²

30/KE2=100/900

KE2=270J

Explanation:

Hope it helps you frnd.....