Question

4. A body moving along a straight line at 20m/sec. undergoes an acceleration of 4m/sec. After 2sec. what will be its speed? Also, find the displacement

Answer 1

we know that

v = u + at

here,

u = 20 m/s

t = 2s

and

a = 4 m/s²

so,

v = 20 + 4x2

thus, final velocity will be

v = 28 m/s