Question

A train travelled 36km/h speed up to 72km/h in 10 seconds what its accerlation?

Answer 1

>>a=Change in velocity/Time

>>S1=36*5/18=10

>>S2=72*5/18=20

>>a=20-10/10=1m/s^2

Answer 2

Answer:

Acceleration is 1 m per s^2

Explanation:

✔Initial velocity u = 36 kmh^-1

✴In m/s

u = 36 x 5/18 m/s = 10m/s

✔Final velocity v = 72 km h^-1

✴In m/s

v = 72 x 5/18 m/s = 20 m/s.

✔Time = 10 s

Now,

✴✴Acceleration a = rate of change of velocity.

✔a = (v - u) / t

a = (20 - 10) ms^-1 / 10 s

a = 10 ms^-1 / 10 s

a = 1 m/s^2

❇Acceleration is 1 m per s^2