Question

when the car starting from restthen some times after reproduce of axlaration is 20m\s 2 in 20 sec find the value of speed

give me ans fast​

Answer 1

Answer:

u=0(since the car starts from rest)

t=20sec.

a=20m/s²

v=u+at

v=0+20×20

v=400m/s

Answer 2

Answer:

Explanation:

Given :-

Initial speed of car, u = 0 (As car starts from rest)

Acceleration of car, a = 20 m/s²

Time taken by car, t = 20 seconds

To Calculate :-

Final speed of car, v = ??

Formula to be used :-

1st equation of motion,

i.e, v = u + at

Solution :-

Putting all the values, we get

v = u + at

⇒ v = 0 + 20 × 20

⇒ v = 20 × 20

⇒ v = 400 m/s

Hence, the final speed is 400 m/s.