Question #dd125

1 Answer
Junaid Mirza
Nov 19, 2017

Kinetic energy of body increased 4 times.

Explanation:

Kinetic energy #=1/2mv^2#

For constant mass (#m#)

#K ∝ v^2#

#(K_2)/K_1 = (v_2/v_1)^2#

#K_2 = K_1 × (v_2/v_1)^2#

#K_2 = K_1 × ((2cancel(v_1))/cancel(v_1))^2#

#K_2 = 4K_1#

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