Newton’s second law states that the net external force equals the time rate of change of momentum: \(\vec F=d\vec p/dt\).
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?
The rate of change of momentum of a body is equal to the resultant:
A particle is observed to be moving with a constant velocity on a perfectly frictionless horizontal surface. According to Newton's laws of motion, what must be true about the net external force acting on this particle?
Newton's First Law of Motion is NOT directly applicable, without the introduction of fictitious forces, if the observation of an object's motion is made from a frame of reference that is ________
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.
Which of the following statement is correct about action and reaction ?