Q.1. Explain the distance and displacement with an example? 2
Q.2. A person walked 12 m toward west then it travelled 5 m toward north. Calculate the distance and the displacement of the concerned person? 2
Q.3. A motor car travels first 60 km of its journey on a highway at 120 km/h and next 60 km at 180 km/h with uniform speed. Calculate the average speed? 2
Q.4. A vehicle starting its motion from rest, travels along a straight path and acquires 72 km/h velocity in 20 s. Now due to application of breaks, its velocity reduces to 18 km/h in 10 s. find the acceleration in both the case? 3
Q.5. What are the two types of graphs to study motion of a moving object and draw the graph for uniform motion, stationary object, non uniform motion, uniform accelerated motion and non uniform accelerated motion? 6
Q.6. Derive the equation of uniform accelerated motion using graph? 3
Q.7. What is the inertia? 1
Q.8. What is law of conservation of momentum and derive its equation? 4
Q.9. What is friction and what are the factors affecting frictional force? 3
Q.10. Mention three advantage and three disadvantages of friction? 3
Q.11. How much force is needed to produce acceleration of 2 m/s2 in a body of mass 500 gram? 2
Q.12. What is the resultant force of balanced forces? 1
Q.13. State Newton’s third law of motion and give two examples? 3
Q.14. Velocity of body of mass m is 20m/s and velocity of a body of mass M is 120m/s. If their momentums are equal find ratio of their masses? 2
Q.15. A bullet of mass 10 g is fired from a rifle. The bullet passes through a barrel in 0.003 s and moves at the velocity of 300 m/s. Calculate the force applied on the bullet by the rifle? 3
