solve ques 15

solve ques 15 0.02KB/sa 5:21 body is a straight line inclined to the time axis with an obtuse angle. How is retardation calculated from the velocity-time graph ? Ans. By finding the negative slope. 15. Draw a graph for acceleration against time for a uniformly accelerated motion. How can it be used to find the change in speed in a certain interval of time ? 16. Draw a velocity—time graph for the free fall of a body under gravity, starting from rest. Take g = 10m s 2 !J.-.-410w is the distance related with time for the motion under uniform acceleration such as the motion of a freely falling body ? Ans. S t2 f a height. Show 9

Dear Student
As the motion is uniformly accelerated that the acceleration is constant with tine and as we know a=dv/dt
change in velocity=adt so the area under graph gives change in velocity.
REGARDS
 

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