When a body moving with a speed of 20 m/s. stops in 20 seconds, what is the acceleration?
-1 m/s2
2 m/s2
-2 m/s2
3 m/s2
Given
u=20m/s , v=0m/s , t=20s
Using, v = u + at
0 = 20 + (a × 20)
a = -1 m/s2
A van starts from rest, accelerates uniformly and attains a speed of 20 m/s in 25 seconds. What is the acceleration of the van?
Figure depicts the motion of a particle moving along an x axis with a constant acceleration. The figure's vertical scaling is set by xs = 6.0 m. What is the particle's acceleration?