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SIMILAR QUESTIONS

Q1

The velocity of light emitted by a source S, observed by an observe O, who is at rest with respect to S, is c. If the observe moves away from S with velocity v, the velocity of light as observed will

Q2

A drunkard is waking along a straight road. He takes 5 steps forward and 3 steps backward and so on. each step is 1 m long and takes 1s. There is a pit on the road 11 m away from the starting point. The drunkard will fall into the pit after

Q3

A person moves 30 m north and then 30 m towards east and finally 30  m in south-west direction. The displacement of the person from the origin will be

Q4

If a particle travels n equal distance with speeds v1, v2,......... vn, then the average speed  fo the particle will be

Q5

The deceleration experienced by a moving motor boat, after its engine is cut-off is given by dv/dt = – k v3, where k is constant. If v0 is the magnitude of the velocity at cut-off, the magnitude of the velocity at a time t after the cut-off is

Q6

For motion of an object along x-axis, the velocity v depends on the displacement x as v = 3x2 – 2x. What is the acceleration at x = 2m.

Q7

A particle moves from A to B. The ratio of distance to displacement is

Q8

Person is going 40 m, north, then 30  m east and then 30 m southwest. The net displacement will be

Q9

A particle is moving along the path y = 4x2. The distance and displacement from x = 1 to x = 2 is (nearly)

Q10

The resistive force suffered by a motor boat is αV2 where V is instantaneous velocity. The engine was shut down when the velocity of the boat was V0. Find the average velocity at any time t.