Question

bicycle increase its speed from 10 kilometre per hour to 15 km per hour in 6 seconds calculate its acceleration​

Answer 1

Here,
Initial velocity (u) = 10 km/h = 10X 5/18 = 2.78 m/s
Final velocity (v) = 15 km/h = 15 X 5/18= 4.17 m/s
Time (t) = 6 sec
Now we know that,
acceleration = v-u/t
Puttin the values,


a = 4.17 - 2.78 / 6
a = 1.39 / 6
a = 23.17 m/s^2

Answer 2

we know that

t = 6 sec = 6 ÷ 3600

u(initial velocity) = 10 km/h

v(final velocity) = 15km/h

acceleration (a) = (v - u)÷t

a = (15 -10×3600)÷6

a = 3000 km/h

Hence acceleration of the body is 3000km/h

hope this answer will help you