Question

A body is moving with uniform velocity of 4m/s for the last 5sec what is it's acceleration​

Answer 1

Answer:

a= -0.8m/s²

Explanation:

Given:

Initial velocity (u) = 4m/s

Time (t) = 5sec

Final velocity = 0m/s since, it is given that u for last 5 sec so, the body should stop in last

Accelaration (a)=?

Now, using the first equation of motion

v= u + at

⇒ 0 = 4 + a×5

⇒ -4 = 5a

⇒ a = -4/5

⇒ a = -0.8 m/s²