Forces and Laws...

X and Y are two objects with masses $$100\ kg$$ and $$75\ kg$$ respectively, then :

An $$80\;\text{kg}$$ person is parachuting and is experiencing a downward acceleration of $$2.8\;\text{m/s}^2$$. The mass of the parachute is $$5\;\text{kg}$$. The net force on the system (parachute+man) is (Take $$\text{g=9.8 m/s}^2$$):

Mark the correct statement.

A fish is swimming in the ocean. Which of the following represents the interaction between the fish and the water?

Use Newton's 2nd law of motion, find out the third missing quantity if mass and force on a body is given?

At the Earth, a block of mass $$m$$ which rest on the frictionless table,  let $$F$$ be the force required to produce acceleration $$a$$. Calculate the force at the Moon to produce same acceleration if  $$g_{moon}$$ is one sixth of $$g_{earth}$$.

A batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball slows a stop because

The rubber band is stretched by the weight of the mass suspended on it, but it is not moving. The action force that causes the rubber band to stretch comes from the earth. Identify the reaction force of the force pair?

A block rests on the floor. Two forces act, one is downward gravitational force and second one is upward reaction force by the floor. These two forces:

A 60 kg man pushes a 40 kg man with a force of 60 N. With what force does the 40 kg man push the other man?