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JEE Main Physics Class 11 Work, Energy and Power Part 2 Questions
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© examsnet.com
Question : 7
Total: 100
A car accelerates from rest to
u
m
∕
s
. The energy spent in this process is
E
J
. The energy required to accelerate the car from
u
m
∕
s
to
2
u
m
∕
s
is
nE
J
. The value of
n
is _______.
[13-Apr-2023 shift 2]
Your Answer:
Validate
Solution:
E
1
=
1
2
mu
2
−
0
=
1
2
mu
2
=
E
E
2
=
1
2
m
(
24
)
2
−
1
2
mu
2
=
3
2
mu
2
=
3
E
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