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9th Chhattisgarh Board
IMPORTANT
Earn 100

The motion of a rocket is based on which concept?

Important Questions on Force and Laws of Motion

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9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 5 - Force and Laws of Motion>Discuss>Q 3
A fire extinguisher is hurt by a rubber pipe that throws water at a very high speed. Explain this.
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9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 5 - Force and Laws of Motion>Questions>Q 1
Two bodies of masses 1 kg and 2 kg are moving parallel to a line in the same direction, at a velocity of 2 m s-1 and 1 m s-1 respectively. Both the bodies collide with each other. After collision, the velocity of the first body becomes 1.5 m s-1. Find the velocity of the second body after collision.
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9th Chhattisgarh Board
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Science (Theory & Practical) Class-9>Chapter 5 - Force and Laws of Motion>Exercise>Q 1
The reason for inertia of a body is
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9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 5 - Force and Laws of Motion>Exercise>Q 1
A boy is sitting on the uppermost berth of a train. Just when the train is coming to a halt, he drops a mango in the open hands of his brother who is sitting on the seat right below him. Where will the mango fall?
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9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 5 - Force and Laws of Motion>Exercise>Q 1
The concept of rocket launching is based on
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9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 5 - Force and Laws of Motion>Exercise>Q 1
A ball stops in 0.06 s when a force of 500 N is applied to it. The momentum of the ball is
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9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 5 - Force and Laws of Motion>Exercise>Q 2
Both the ends of a balance are pulled with a weight of 20-20 kg on each side. The reading on the balance is _____  kg.
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9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 5 - Force and Laws of Motion>Exercise>Q 2
The first law of motion is also known as the law of _____.