Physics Test 18...

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 v_d. 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