Question

9. The speed time anaph of a ball moving
along a straight line is shown in the
figure belove calculate the acceleration
that brings the ball to rest​

Answer 1

Answer:

average velocity is 25m/s so distance will be 25×20=500m

now finding area of the graph between velocity and time graph we get 

area of two triangles + area of rectangle.

2.21t.5.t+(25−2t).5t=500=>t2−25t+100

=>t=5