Question

.................... Answer please....................​

Answer 1

Answer:

The kinetic energy of an object of mass m moving with a velocity of 5m/s is 25J What will be its kinetic energy when its velocity ... When it's velocity is increase three times.

let the mass be m

v = 5m/s

K.E = 25 J

K.E = 1/2 mv^2

25 = 1/2 m (5)^2

25 x 2 = 25m

m = 2 kg

Now if the velocity becomes 3 times then the velocity is 3 x 5 = 15m/S

Now new K.E = 1/2 x 2 x15^2

=225 J.

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