The rate of change of momentum of a body is equal to the resultant:
Force
Correct option- (c)
The rate of change of momentum of a body is equal to the force applied.
Momentum = mass × velocity
Change in momentum →
d(momentum) = mass × d(velocity)
Force = mass × acceleration
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A person throws an object on a horizontal frictionless plane surface. It is noticed that there are two forces acting on this object -(i) gravitational pull and (ii) normal reaction of the surface. According to the third law of motion, the net resultant force is zero. Which one of the following can be said for the motion of the object?

In the given velocity (V) versus time (t) graph, accelerated and decelerated motions are respectively represented by line segments
A balloon is filled with air. The mass of the air in the balloon is 10 gram. A small hole is made to the balloon and released. The balloon moves up with an average speed of 5 cm/s and shrinks completely in 5 seconds. Find the average force acting on the balloon.
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