Answer:
The acceleration of a bike is 2.34 m/s².
Step-by-step explanation:
Given that,
Velocity = 38 km/hr
Time = 4.5 s
We need to calculate the acceleration
Using equation of motion


Where, v = final velocity
u = initial velocity
t = time
Put the value in to the formula


Negative sign shows the deceleration.
Hence, The acceleration of a bike is 2.34 m/s².