MEDIUM
9th CBSE
IMPORTANT
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Why is the recoil of a heavy gun, on firing, not so strong as that of a light gun using the same cartridge?

Important Questions on Force and Laws of Motion

HARD
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>CHAPTER EXERCISE>Q 21
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-1 to 7 m s-1. Find the magnitude of the applied force.
Now, if the force was applied for a period of 5 s, then what would be the final velocity of the object?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>CHAPTER EXERCISE>Q 22
A large truck and a car, both moving with a velocity of magnitude u, have a head-on collision and both of them come to a halt after that. If the collision lasts for 1 s. Which vehicle experiences the greater force of impact?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>CHAPTER EXERCISE>Q 22
A large truck and a car, both moving with a velocity of magnitude u, have a head-on collision and both of them come to a halt after that. If the collision lasts for 1 s. Which vehicle experiences a greater change in momentum?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>CHAPTER EXERCISE>Q 22
A large truck and a car, both moving with a velocity of magnitude u, have a head-on collision and both of them come to a halt after that. If the collision lasts for 1 s. Which vehicle experiences a greater acceleration?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>CHAPTER EXERCISE>Q 22
A large truck and a car, both moving with a velocity of magnitude u, have a head-on collision and both of them come to a halt after that. If the collision lasts for 1 s. Why is the car likely to suffer more damage than the truck?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>Challengers*>Q 1
A force-time graph for a linear motion of a body is shown in the figure. The change in linear momentum between 0 and 7 s is
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MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>Challengers*>Q 2
A body of weight 2 kg is suspended as shown in figure.
Question Image
The tension T, in the horizontal string in kg wt is
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>Challengers*>Q 3
The pulleys and strings shown in the figure are smooth and of negligible mass.
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For the system to remain in equilibrium the angle θ should be