Question

Question : A car increases its sheed from
36 km/h to 72 km/h in 5 seconds. Find
its acceleration​

Answer 1

Answer:

Initial Velocity = 36 km/h

Final Velocity = 72 km/h

Time Taken = 5 seconds

Acceleration = Final Velocity - Initial Velocity / Time Taken

Acceleration = 72 - 36 / 5 = 36 / 5 = 7.2 m s^-2.

FOLLOW ME PLEASE

THANK ANY 10 OF MY ANSWERS

PLEASE

Answer 2

GiVeN :-

• Initial Velocity (u) = 36 km/h

• Final velocity (v) = 72 km/h

• Time (t) = 5 seconds

To FinD:-

• Acceleration (a)

SoLuTiOn :-

To convert km/h into m/s we have to multiply it by 5/18

So,

Initial Velocity (u) = 36 × 5/18 = 10 m/s

Final velocity (v) = 72 × 5/18 = 20 m/s

Now,

We know that,

Acceleration => The rate of change of velocity per unit time.

Formula = Acceleration (a) = Final velocity (v) - Initial velocity (u) / Time (t)

So,

Acceleration (a) = (v - u) / t = (20 - 10)/2

=> 10/2 = 5m/s^2