Question

A car was running with velocity of 20m/s what will be its after 30 sec if its acceleration is 5m/s2

Answer 1

Answer:

S = 160m

Step-by-step explanation:

By third equation of motion.

v^2 = u^2 +2as

0 = (20)^2 + 2 (a) (40)

0 = 400 + 80a

-80 a = 400

a = 400/80

a = 5

So, a = - 5 .

Is shows retardation.

Now, (u) = 2×20

= 40 m/s

So,

0 = (40)^2 + 2 (-5) (s)

0 = 1600 - 10s

10s = 1600

s = 1600/10

s = 160 m.

Please mark me as BRAINLIEST.