29.
A body is acted on by a force given by
F =(10+21)N . The impulse received by
the body during the first four seconds is
1) 40 NS
2) 56 N 8
3) 72 Ns
4) 32 Ns
t
Answers
Answered by
2
Answer:
Given force, F=(10+2t)N
Impulse, J=∫
0
4
F⋅dt
=∫
0
4
(10+2t)⋅dt=[10t+t
2
]
0
4
=[10(4)+4
2
]=56Ns.
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