Question 27:
A body of mass 2 kg is at rest. What should be the magnitude of force which will make the body move with
a speed of 30 m/s at the end of 1 s ?
Lakhmir Singh Physics Class 9
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speed=30m/s² that is v=30m/s
the body is at rest so.. u=0m/s
time is give as t= 1sec
as we know
v=u+at
30=0+a(1)
30=a
a=30m/s²
F=ma
F=2(30)
F=60newton
the body is at rest so.. u=0m/s
time is give as t= 1sec
as we know
v=u+at
30=0+a(1)
30=a
a=30m/s²
F=ma
F=2(30)
F=60newton
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