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A ship A is moving westwards with a speed of 10kmh−1 and a ship B 100 km South of A, is moving northwards with a speed of 10kmh−1. The time after which the distance between them becomes shortest, is
A particle is moving such that its position coordinates (x, y) are (2 m, 3 m) at time t = 0, (6 m, 7 m) at time t = 2 s and (13 m, 14 m) at time t = 5 s.
Average velocity vector from t = 0 to t = 5 s is
A particle has initial velocity The magnitude of velocity after 10 seconds will be
A missile is fired for maximum range with an initial velocity of 20 m/s. the range of missile is
Choose the wrong statement for zero error and zero correction:
Which of the following pairs of physical quantities does not have same dimensional formula?
A particle moves in a straight line with a constant acceleration. It changes its velocity from 10ms−1 to 20ms−1 while passing through a distance 135 m in t second. The value of t is
A car moves from X to Y with a uniform speed vu and returns to Y with a uniform speed vd. The average speed for this round trip is
Two bodies A (of mass 1kg) and B (of mass 3kg) are dropped from heights of 16m and 25m, respectively. The ratio of the time taken by them to reach the ground is
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