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Define the state of rest. Comment on the speed of an object at the state of rest.

Important Questions on Force and Pressure

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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
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: 
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion

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: 

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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
A packet of weight W was allowed to fall freely in a water tank with acceleration a<g. The magnitude of resistive force offered by water is :
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
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: 
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
A wooden plank of length L rests on a frictionless floor. A boy of mass M now runs over the plank starting from its one end. If one wooden plank is M5, the distance covered by the boy relative to the ground will be:
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
List the five changes a force can produce in an object's state.
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
Which of the following change appreciably when a batsman hits a moving cricket ball?
A. Shape B. Direction C. Size D. Speed.
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
Write the effect of the following action:

Stretching a spring.

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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
Write the effects of the following action:

Pulling the rope tied to a toy.

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Science>Physics>Force and Pressure>A Force Can Change the State of Motion

In the following situation identify the agent exerting the force and the object on which it acts. State the effect of the force in the case. 

An athlete making a high jump to clear the bar at a certain height.

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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
Define 'state of motion' of an object. Name the 'agent' which can change the state of motion of an object.
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
Give one example where force changes the direction of a moving object. 
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
Give examples of change produced in the direction of a moving object by a contact force.
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
Give one example where force moves a stationary object.
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
Write the effect of the following action:

Inflating a balloon.

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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
Give one example where force changes the shape of an object.
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
Why does the shape of an ointment tube change when we squeeze it?
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
State one example where force stops a moving object.
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
Give one example where force changes the speed of a moving object.
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Science>Physics>Force and Pressure>A Force Can Change the State of Motion
A ball hits a wall. It changes _____ of the ball.