1 Marks Questions 1. A passenger …

1 Marks Questions 1. A passenger sitting in a car at rest, pushes car from within. The car doesn't move. Why? 2. Give the magnitude and directions of the net force acting on a rain drop falling with a constant velocity. 3. Why the passengers in a moving car are thrown outwards when it suddenly takes a turn? 4. What is the purpose of using shockers in a car? 5. Why are tyres made of rubber not of steel? 6. Wheels are made circular. Why? 7. A force is required to keep a body in uniform motion in a straight line. Comment. 8. On a rainy day skidding takes place along a curved path Why? 9. Why does a gun recoils when a bullet is being fired? 10. Why is it difficult to catch a cricket ball than a tennis ball even when both are moving with the same velocity? 11. Calculate impulse necessary to stop a 1500 kg car moving at a speed of 2 Sms^. (-37500 N-) 12. Lubricants are used between the two parts of a machine. Why? 13. What provides the centripetal force to a car taking a turn on a level road? 14. What is inertial frame of reference? 15. An athlete runs a certain distance before taking a long jump. Why? 16. Action and reaction forces do not balance each other. Why? 17. The wheels of vehicles are provided with mudguards. Why? 18. China wares are wrapped in straw paper before packing? 19. Why is it difficult to walk on a sand? 20. The outeredge of a curved road is generally raised over the inner edge. Why? 21. Explain why the water doesn't fall even at the top of the circle when the bucket full of water is upside down rotating in a vertical circle? 22. Why does a speedy motor cyclist bends towards the centre of a circular path while taking a turn on it? 23. If net force acting upon particle is zero show that its linear momentum remains constant? Ans of all theoritical questions please... It will also help u...

Project report

How to know which one is impulse and which one is force in numericals

√kq,qpower2 R2

Find unit vectors parallel to the resultant of the vectors A=i+4j-k and B=3i-5j+k

Find the dimensions of latent heat and specific heat.

Which of rhe following is representive as per the correct with •stress/strain = newton/meter square •pressure = newton/meter square •surface tension =newton/meter square

Ch 1 question no. 14

A train travels 1/4 distance between two places with the speed of 4km/h and the rest 3/4 distance with the speed of 6km/h. What is the average speed of the train?

1dyne convert to S.I unit

2d+2d =