A man of 50 kg mass is standing in a gravity free space at a height
A man of 50 kg mass is standing in a gravity free space at a height of 10 m above the floor. He throws a stoneof 0.5 kg mass downwards with a speed 2 m/s. […]
Physics
A particle of mass m is projected with velocity v making an angle of 45° with
A particle of mass m is projected with velocity v making an angle of 45° with the horizontal. When the particle lands on the level ground the magnitude of the change in its momentum will […]
A body is moving with velocity 30 m/s towards east. After 10 seconds its velocity
A body is moving with velocity 30 m/s towards east. After 10 seconds its velocity becomes 40 m/s towards north. The average acceleration of the body is
Options
(a) 1m/s² (b) 7 m/s² […]
A particle starting from the origin (0, 0) moves in a straight line in the (x, y) plane
A particle starting from the origin (0, 0) moves in a straight line in the (x, y) plane. Its coordinates at a later time are (√3,3). The path of the particle makes with the x-axis […]
A ball is dropped from the root of a tower of height h
A ball is dropped from the root of a tower of height h.The total distance covered by it in the last second of its motion is equal to the distance covered by it in first […]
A boy standing at the top of a tower of 20m height drops a stone
A boy standing at the top of a tower of 20m height drops a stone. Assuming g = 10 ms⁻², the velocity with which it hits the ground is
Options
(a) 10 m/s […]
An objective moves ,starting from rest through a resistive medium
An objective moves ,starting from rest through a resistive medium such that it’s acceleration is related to velocity as, a=3-2v.Then,
Options
(a) the terminal velocity is 1.5 unit (b) the terminal velocity is […]
A train is moving along a straight path with uniform acceleration
A train is moving along a straight path with uniform acceleration.It’s engine passes across a pole with a velocity of 60 kmh⁻¹ and the end (guard’s van) passes across same pole with a velocity of […]
In one dimensionsal motion,instantaneous speed v statisfies 0⦤v⦤vₒ
In one dimensionsal motion,instantaneous speed v statisfies 0⦤v⦤vₒ
Options
(a) The displacement x in time T must always take non-negative values (b) The displacement x in time T satisfies -vₒT
A body initially at rest is moving with uniform acceleration a m/s²
A body initially at rest is moving with uniform acceleration a m/s².It’s velocity after n second is v.The displacement of the body in last 2s is
Options
(a) 2v(n-1)/n (b) v(n-1)/n (c) v(n+1)/n […]