Questions
A ball falls towards the earth. Which of the following is correct?
a
if the system contains ball, the momentum is conserved
b
if the system contains earth, the momentum is conserved
c
if the system contains the ball and the earth, the momentum is conserved
d
all of the above correct
detailed solution
Correct option is C
The earth is attracting the ball and the ball also attracts the ball by the same force. So resultant force on the system is zero and the momentum of the system is conserved.Talk to our academic expert!
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In the figure given the position-time graph of a particle of mass 0.1 kg is shown. The impulse at t = 2 s is :
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