Question

2kg द्रव्यमान के एक पिंड का रैखिय संवेग 2NS हो तो उसके गतिज ऊर्जा का मान हो
ESIDE
The kinetic energy of a body of mass 2kg and momentum 2NS is
(a)1j
(b) 2j
​

Answer 1

Answer:

The kinetic energy of a body of mass 2kg and momentum 2NS is

(a)1j

(b) 2j

Explanation:

1)The formula for finding velocity is p=m×v where p stands for momentum and m stands for mass.

so m is given m= 2kg

and momentum is given p= 2NS

p=mv

2=2×v

v= 2÷2

v= 1 m/s

or velocity = 1 m/s

Now for finding kinetic energy the formula is 1÷2 mv2

K.E. = 1÷2 mv2

K.E.= 1÷2 2×(1)2

K.E.= 1÷2 2×1

K.E.= 1÷2 ×2

K.E.= So the answer is 1 Joules

So the kinetic energy will be 1 Joules