Question

a body moving along a straight line at 20m/s undergoes an acceleration of -4 ms-2 after2 secs its speed will be

Answer 1

Answer:

12m/s

Hope this helps.....

Answer 2

Answer:

Step-by-step explanation:

u....20ms-1

a= -4 ms-2

t....2secs

v......?

Using ist equation of motion......

V - U = at

V = at+u

V = -8+20

V = 12 ms-1