Force and Laws of Motion

The number of independent equations to solve a network is equal to _____.

Which of the following is not an SI unit?

For a body thrown vertically upwards, if the air resistance is taken into consideration, then the time of rise is

A simple pendulum hangs from the roof of a train whose string is inclined towards the rear of the train. Then the train is

The principle of inertia was first stated by

Which of the following has more inertia. A rubber ball or an iron of the same size?

There are 3 balls of same shape and size made of wood, iron and plastic. Which one of them would have the highest inertia?

Why does a man getting off a moving bus fall down?

Read the following statements and choose the correct option:
Statement: Newton's second law of motion gives the measurement of force. 
Reason: According to Newton's second law of motion, force is directly proportional to the rate of change of momentum. 

Action and reaction force acts on:

A light and a heavy object have same momentum, then:

A machine gun fires a bullet of mass $40$ gram at a speed of $1200 \mathrm{m} {\mathrm{s}}^{-1}$. The man holding it can exert a maximum force of $144 \mathrm{N}$ on the gun. How many bullets can he fire per second at the most?

A horizontal force $‘F’$is applied to keep the block stationary on a frictionless inclined plane. Find the angle of incline, for which the applied force is equal to the weight of body: 

The variation in momentum with time, for a body under collision is shown in figure. The maximum & minimum instantaneous forces are respectively on these points:

A force ‘F’ is applied on one end of a rope of length ‘a’. P and Q are two points of length ‘b’ from nearest end. The ratio of tensions in string at P & Q is :

An object of mass $10 \mathrm{gm}$ is moving with an acceleration of $10 \mathrm{m}/{\mathrm{s}}^2$. Force acting on the object will be:

A cork is immersed in a jar of water and released. How the cork will move if the jar is assumed to be kept in a satellite orbiting earth: 

Among the following, the body possessing highest momentum is :

In a two body collision, the momentum is varying with time as shown in graph. The instantaneous force is maximum at: 

A person of weight $W$ jumps to ground with his legs fixed and comes to rest with an upward acceleration of $3 g.$ ($g$is acceleration due to gravity). The force exerted by him during landing is: