Question

A body moving along a straight line at 20 m/s undergoes an acceleration of-4 m/s2. After two seconds its speed will be​

Answer 1

Answer:

12

Explanation:

v = u+at

v= ?

u= 20

a = -4

t= 2

v = 20 + -4 (2)

v= 20 +(-8)

v = 12