93) If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is

94) Two objects moving with uniform speeds are 5 m apart after 1 second when they move towards each other and are 1 m apart when they move in the same direction.The speeds of the objects are

95) The angular speed of a car taking a circular turn of radius 100 m at 36 km/hr will be

96) A bullet weighing 10 gm moves with a velocity of l km/sec. Its kinetic energy is i) 5000 N.m ii) 5000 kg.m iii) 5000 J The correct answer is

97) A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec2)