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A train moves by a velocity 20m/sec through 10 sec , if the brakes were applied to stop the train find the acceleration.and mention the train moves by (Accelerating motion – deceleration motion).
When the brakes applied (v final = zero) So, a= Vf(0)- vi (20) / time(10 )= -2 meter /sec2 (a = negative) and body moves with accelerating motion)
A race car can move from rest and its speed reaches 20m/sec through 5 sec. calculate the acceleration of the car. and mention the body moves by Accelerating motion – deceleration motion.
start from rest ,the initial speed = zero So, ( a ) = Final speed - initial speed / time , a= (20- 0) / 5 = 4 meter/sec2
The rate of change of speed of a moving object is called.......................... and when the moving object moves with a regular speed ,its acceleration will =...............
acceleration. , the acceleration will be = zero as there is no change in the speed
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