A body of mass 2 kg is projected vertically | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) According to the law of conservation of energy,the speed of the body when it returns to the point of projection will be equal to the speed with wh

Vedclass · Accepted Answer

$4$

Vedclass · Answer

(C) According to the law of conservation of energy,the speed of the body when it returns to the point of projection will be equal to the speed with which it was projected.Since the body is projected upwards with a velocity $v = 2 \ m \ s^{-1}$,it will return to the ground with the same velocity $v = 2 \ m \ s^{-1}$.The kinetic energy $K$ is given by the formula $K = \frac{1}{2}mv^2$.Substituting the values $m = 2 \ kg$ and $v = 2 \ m \ s^{-1}$:$K = \frac{1}{2} 	imes 2 	imes (2)^2 = 4 \ J$.

$A$ body of mass $2 \ kg$ is projected vertically upwards with a velocity of $2 \ m \ s^{-1}$. What will be its kinetic energy in $J$ just before it hits the ground?

Similar Questions

Is kinetic energy a scalar quantity or vector quantity?

If the kinetic energy of a body changes by $20 \%$,then its momentum would change by:

$A$ light and a heavy body have equal kinetic energy. Which one has a greater momentum?

If the increase in the kinetic energy of a body is $22\%$,then the increase in the momentum will be ........... $\%$

Two bodies of mass $4 \,g$ and $25 \,g$ are moving with equal kinetic energies. The ratio of the magnitude of their linear momentum is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module