Question

15.b please solve.....

Answer 1

V = u+at

V1 = s×t =20×1=20ms

V2 = s×t = 2×40=80ms

U = 0

Substituting

V1= 0+a(1)

a=20m/s

V2 = 80ms

80=0+a(2)

a=40ms

Acceleration=40+20

=60ms