MEDIUM
9th ICSE
IMPORTANT
Earn 100

State the action and reaction in the case of a book lying on a table.

Important Questions on Laws of Motion

MEDIUM
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 15
A man throws a ball weighing 500 g vertically upwards with a speed of 10 m/s. What will be its initial momentum?
MEDIUM
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 15
A man throws a ball weighing 500 g vertically upwards with a speed of 10 m/s. What would be its momentum at the highest point of its flight?
MEDIUM
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 16
If a net horizontal force of 130 N is applied to a person with mass 60 kg who is resting on the edge of a swimming pool, what horizontal acceleration is produced?  
MEDIUM
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 17
A certain force exerted for 1.2 s raises the speed of an object from 1.8 m/s to 4.2 m/s. Later, the same force is applied for 2 s. How much does the velocity change in 2 s?
MEDIUM
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 18
A bus starts from the stop and take 50 s to get the speed of  10 m/s. If the mass of the bus along with the passengers is 10000 kg, calculate the force applied by the engine of the bus to push the bus at the speed of 10 m/s.
MEDIUM
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 19
A constant force acts on an object of 5 kg for a period of 2 s. It increases the velocity of an object from 3 m/s to 7 m/s. Find the magnitude of the applied force. Now, if the force was applied for a period of 5 s, what would be the final velocity of the object?
MEDIUM
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 20

The speed-time graph of a car of 1000 kg mass is given. On the basis of this, answer the following question.

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What is the maximum force acting on the car?

 

MEDIUM
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 20

The speed-time graph of a car of 1000 kg mass is given. On the basis of this, answer the following question.

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What is the retarding force acting on the car?