CBSE Class 9 Science Force and Laws of Motion Worksheet Set F

Read and download free pdf of CBSE Class 9 Science Force and Laws of Motion Worksheet Set F. Download printable Science Class 9 Worksheets in pdf format, CBSE Class 9 Science Chapter 9 Force and Laws of Motion Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Science Class 9 Assignments and practice them daily to get better marks in tests and exams for Class 9. Free chapter wise worksheets with answers have been designed by Class 9 teachers as per latest examination pattern

Chapter 9 Force and Laws of Motion Science Worksheet for Class 9

Class 9 Science students should refer to the following printable worksheet in Pdf in Class 9. This test paper with questions and solutions for Class 9 Science will be very useful for tests and exams and help you to score better marks

Class 9 Science Chapter 9 Force and Laws of Motion Worksheet Pdf

FORCE AND LAWS OF MOTION
 
SECTION A 
1. Mass of a body is doubled. How does its acceleration change under a given force?
 
2. Why are athletes in high jump event made to fall on a sand bed or on a cushioned bed?
 
3. Name the physical quantity that measures the state of inertia. Write its S.I.unit.
 
4. A ball is thrown vertically upwards. What is its momentum at the highest point?
 
5. Luggage placed on the roof of a car is tied with a rope. Give reason.
 
6. An object of mass 2kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal table. How much force is required to keep the object moving with the same velocity?
 
7. Why are the wheels of vehicle is provided with mud guards?
 
8. Two bodies A and B of same mass are moving with velocities v and 3v respectively.
 
Compare their (i) inertia (ii) momentum (iii) the force needed to stop them in the same time.
 
9. Why does a boat tend to leave the shore, when passengers are alighting from it?
 
10. Why is it difficult for a fireman to hold a hose, which ejects large amount of water at a high velocity?
 
SECTION B 
 
1. A force of 5 N produces an acceleration of 8 m/s2 in mass m1andanacceleration of 24 m/s2 in mass m2 . What acceleration would it give if both masses are tied together?
 
2. A body of mass1000kg moving at a speed of 10m/s reaches the speed of 50m/s in 20s.Calculate the force required to do so.
 
3. A scooter is moving with a velocity of 25 m/s and it takes 5 s to stop after the brakes are applied. If the mass of the scooter along with the rider is 180kg, find the change in momentum in this case.
 
4. A gun of mass500 g fires a bullet of mass 10 g with a speed of 100 m/s. Find the recoil velocity of the gun.
 
5. A bullet of 10g strikes a sand bag at a speed of 1000 m/s and gets embedded after travelling 5cm.Calculate the resistive force exerted by the sand on the bullet and the time taken by the bullet to come to rest.

6. A bullet of mass 4 g when fired with a velocity of 50 m/s can enter a wall up to a depth of 10 cm. How much will be the average resistance offered by the wall?

7. An iron sphere of mass 1 kg is dropped from a height of 10 m. If the acceleration of sphere is 9.8 m/s2 , calculate the momentum transferred to the ground by the ball.
 
8. For how long should a force of 100 N act on a body of mass 20 kg at rest so that it acquires a velocity of 100 m/s?
 
9. Velocity – time graph of a ball of mass 50 g rolling on a concrete floor is as shown in figure. Calculate the acceleration and the frictional force of the floor on the ball.
CBSE Class 9 Science Force and Laws of Motion Worksheet Set F
10. Two objects of masses 100g and 200g are moving along the same line and direction with velocities of 2 m/s and 1 m/s respectively. They collide and after the collision, the first object moves at a velocity of 1.67 m/s. Determine the velocity of second object.


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CBSE Class 9 Science Chapter 9 Force and Laws of Motion Worksheet

The above practice worksheet for Chapter 9 Force and Laws of Motion has been designed as per the current syllabus for Class 9 Science released by CBSE. Students studying in Class 9 can easily download in Pdf format and practice the questions and answers given in the above practice worksheet for Class 9 Science on a daily basis. All the latest practice worksheets with solutions have been developed for Science by referring to the most important and regularly asked topics that the students should learn and practice to get better scores in their examinations. Studiestoday is the best portal for Printable Worksheets for Class 9 Science students to get all the latest study material free of cost.

Worksheet for Science CBSE Class 9 Chapter 9 Force and Laws of Motion

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Chapter 9 Force and Laws of Motion worksheet Science CBSE Class 9

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Chapter 9 Force and Laws of Motion CBSE Class 9 Science Worksheet

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Worksheet for CBSE Science Class 9 Chapter 9 Force and Laws of Motion

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