Question

A car is travelling at 20 km/h it speeds upto 60 km/ h in 6 seconds. What is its acceleration ​

Answer 1

convert speeds to metre per second

final velo in m/s=v

initial velo in m/s=u

time is in sec no need to convert it.

put into formula

$(v - u) \div t$

calculate

answer will be in m/s²

Answer 2

Answer:

Answer:

1.85 m/s^2

Explanation:

According to the given question,

u = initial velocity = 20 km/h = 20×1000/3600 = 5.55 m/s

v = final velocity = 60 km/h = 60×1000/3600 = 16.67 m/s

t = time = 6 sec

a = acceleration

And we are asked to find the acceleration of the car.

We know,

v = u+at

Putting the values we get,

16.67 = 5.55+6a

6a = 16.67-5.55

6a = 11.11

a = 11.11/6

a = 1.85 m/s^2

Thus acceleration of the body is 1.85 m/s^2 from the given data of u, v and t.