A force of 50N acts on a of mass 10kg at rest. What is its acceleration? What is its velocity after 5s if the same force acts?
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Answer:
Let the body starts from rest.
∴u=0
Final velocity = distance / time = 50/5 = 10 m/s
Now, using equation of motion, v = u + at
a=
t
v−u
=
10
10−0
=1ms
−2
Force = F= ma = 10kg×1ms
−2
= 10 N
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