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An athlete runs some distance before taking a long jump. This is because

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Important Questions on Force and Laws of Motion

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9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 11
A force is known completely by knowing its
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9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 12
A unit of force is
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9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 13
The physical quantity which is equal to the rate of change of momentum is
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9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 14
The action-reaction forces
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9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 15
Which of the following is not used to reduce friction?
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9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 16
Impulse is
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9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 17
A constant retarding force of 100 N is applied to a body of mass 60 kg moving initially with a speed of 5 m s-1. What is the change in momentum of body when the body comes to a halt?
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9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 18
A spring balance is pulled to each side by identical forces of 100 N. The reading on the spring balance is
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