A spherical body of mass 2 kg starting from rest acquires a kinetic energy of 10000 J at the end of 5^th second. The force acted on the body is____N.

Question

Accepted Answer

Correct answer: 40. (40) 12x^2xv^2 =10000 ⇒ v^2 = 10000 ⇒ v=100m/s ⇒ v = at = ax5 = 100 ⇒a = 20m/s^2 F = ma = 2 x 20 = 40 N

$A spherical body of mass 2 kg starting from rest acquires a kinetic energy of 10000 J at the end of 5^{t h} second. The force acted on the body is____N.$