A projectile of mass m is thrown vertically up with an initial velocity v from the surface of earth (mass of earth = M). If it comes to rest at a height h, the change in its potential energy is
A ball of mass 50 is thrown vertically upwards with an initial velocity of 20 ms^(1) Calculate: (i) in the initial kinetic energy imparted to the ball, (ii) the maximum height reached if air friction is neglected, and (iii) the maximum height reached if 40% of the initial energy is lost against the air friction. Take g=10 ms^(-2)
A ball of mass 0.20 kg is thrown vertically upwards with an initial velocity of 20 m s^(-1) .Calculate the maximum potential energy it gains as it goes up.
A body of mass m is dropped from a height of h . Simultaneously another body of mass 2m is thrown up vertically with such a velocity v that they collide at height h/2 . If the collision is perfectly inelastic, the velocity of combined mass at the time of collision with the ground will be
A body of mass m is dropped from a height of h . Simultaneously another body of mass 2m is thrown up vertically with such a velocity v that they collide at height h/2 . If the collision is perfectly inelastic, the velocity of combined mass at the time of collision with the ground will be
A body is thrown vertically upwards with initial velocity 'u' reaches maximum height in 6 seconds. The ratio of distances travelled by the body in the first second and seventh second is
A ball of mass 'm' is thrown vertically up-ward from the ground and reached a height 'h' before momentarily coming to rest , If 'g' is acceleration due to gravity . What is the impulse received by the ball due to gravity force during its flight ? (neglect air resistance )
A ball is thrown vertically upwards with an initial velocity of 49 m s^(-1) . Calculate the time taken by it before it reaches the groung again (Take g= 9.8 m s^(-2) )
Two balls of different masses are thrown vertically upward with same initial velocity. Height attained by them are h_1 and h_2 respectively. What is h_1//h_2 ?
A ball is thrown vertically up with a certain velocity. It attains a height of 40m and comes back to the thrower. Then the (g=10m//s^(2))
ICSE- WORK ENERGY AND POWER-EXERCISE-2(C )MULTIPLE CHOICE TYPE
