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CBSE Questions

Total Questions 9982
a ball is droped from a height of 45m.2 secs later,another ball is thrown downward from the same height.if both hit the ground simultaneously,find the difference between velocities of the two balls,just before hitting the ground. take g=10m/s
a hot air baloon,released from the ground moves up witha constand acceleration of 5m/s.a stone is released from it at the end of 8secs.find the height of the stone from the ground at the end of 8secs after it is released from the baloon.take g=10m/s
a body takes t second to reach a maximum height 'h' m,when projected vertically upward from the groun.find the position of the body after t/2 seconds from the ground in terms of h.
a stone projected up vertically with a velocity v,reaches points x,y,z in its path with velocities v/root5 , v/root10 , v/root15 respectively.find the ratio xy:yz?
when a body is dropped froma tower it covers 75% of its total height in the last second of its fall.what is the total height of the tower?
a tennis ball and cricket ball are placed on a smooth frictionless surface and given same initial velocities in the horizontal direction.which among them travel more distance after a particular time interval?explain.
a person travels two parts of the total distance in the ration 2:1 with constant speeds of 30km/hr and 40km/hr respectively.what is the average speed of the journey?
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