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)

98) The condition for a lifting machine to be reversible is that its efficiency should be

99) In a lifting machine a weight of 5 kN is lifted through 200 mm by an effort of 0.1 kN moving through 15 m. The mechanical advantage and velocity ratio of the machine are respectively