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,when a body is projected vertically upwards with an initial velocity $u$,it will return to the poin

Vedclass · Accepted Answer

$4$

Vedclass · Answer

(C) According to the law of conservation of energy,when a body is projected vertically upwards with an initial velocity $u$,it will return to the point of projection with the same speed $v = u$,assuming air resistance is negligible.Given mass $m = 2 \, kg$ and initial velocity $u = 2 \, m/s$.The velocity just before striking the ground will be $v = 2 \, m/s$.The kinetic energy is given by the formula $K.E. = \frac{1}{2} m v^2$.Substituting the values: $K.E. = \frac{1}{2} 	imes 2 	imes (2)^2 = 1 	imes 4 = 4 \, J$.

$A$ body of mass $2 \, kg$ is projected vertically upwards with a velocity of $2 \, m/s$. The kinetic energy $(K.E.)$ of the body just before striking the ground is ............. $J$.

Similar Questions

$A$ car moving at a speed $v$ is stopped by a retarding force $F$ in a distance $s$. If the retarding force were $3 F$,then the car will be stopped in a distance

$A$ body dropped from height $H$ reaches the ground with a speed of $1.1 \sqrt{gH}$. Calculate the work done by air friction in terms of $mgH$.

$A$ uniform chain of mass $M$ and length $L$ is released from rest from a smooth horizontal surface as shown in the figure. The velocity of the chain at the instant it completely comes off the table will be:

The mechanical energy of a freely falling body is......

When a body is acted upon by a resultant force, then the work done by the resultant force is equal to

Vedclass Test Series

Exam Paper Generator

Online Exam Module