LEVEL - 13
Change in momentum, Force, Impulse
1. A force of 50 N acts on a body of mass
10 kg at rest. What is its acceleration?
What is its velocity after 5 seconds if the
same force acts?
1) 15 m/s
2) 20 m/s
3) 25 m/s 4) 30 m/s
Answers
Answered by
1
Answer:
a = 5m/s^2
v = 25m/s
Explanation:
F = 50N
m = 10kg
According to Newton's Second Law of Motion,
F = ma
==> a = F/m
= 50/10
= 5m/s^2
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u = 0 (since the body is initially at rest)
a = 5m/s^2
t = 5sec
According to the First Equation of Motion,
v = u + at
= 0 + 5×5
= 25m/s.
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Hope it helps.....!
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