Questions in Motion in A Straight Line

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If a freely falling body travels in the last second a distance equal to the distance travelled by it in the first three second, the time of the travel is
The effective acceleration of a body, when thrown upwards with acceleration a will be :
A body is thrown vertically upwards with velocity u. The distance travelled by it in the fifth and the sixth seconds are equal. The velocity u is given by (g = 9.8 m/s2)
A body, thrown upwards with some velocity reaches the maximum height of 50 m. Another body with double the mass thrown up with double the initial velocity will reach a maximum height of
A parachutist after bailing out falls 50 m without friction. When parachute opens, it decelerates at 2 m/s2. He reaches the ground with a speed of 3 m/s. At what height, did he bail out ?
Three particles A, B and C are thrown from the top of a tower with the same speed. A is thrown up, B is thrown down and C is horizontally. They hit the ground with speeds \[{V_A},\,\,{V_B}\] and \[{V_C}\] respectively.
From the top of a tower two stones, whose masses are in the ratio 1 : 2 are thrown one straight up with an initial speed u and the second straight down with the same speed u. Then, neglecting air resistance
When a ball is thrown up vertically with velocity \[{V_o}\], it reaches a maximum height of 'h'. If one wishes to triple the maximum height then the ball should be thrown with velocity
An object start sliding on a frictionless inclined plane and from same height another object start falling freely
A stone falls from a balloon that is descending at a uniform rate of \[12\,\,m/s\]. The displacement of the stone from the point of release after 10 sec is

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