Question

a bus moving along a straight line at 20 m/s under goes an accelaration of 4m/s after 2 sec its speed will be?

Answer 1

u = 20m/s
a = 4m/s
t = 2s

we know,
v = u + at
v = 20 + 4 * 2
v = 20 + 8
v = 28m/s