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
If a particle travels n equal distance with speeds v1, v2,......... vn, then the average speed fo the particle will be
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
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.
A particle moves from A to B. The ratio of distance to displacement is
Person is going 40 m, north, then 30 m east and then 30 m southwest. The net displacement will be
A particle is moving along the path y = 4x2. The distance and displacement from x = 1 to x = 2 is (nearly)
A particle moves according to the equation x = t2 + 3t + 4. The average velocity in the first 5 s is
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.
A stone is dropped from a certain 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