Question

What will be the acceleration, if a vehicle started from rest and its velocity reached 20 m/s after 5 second? Calculate. Ans: 4m/s (2)​

Answer 1

Answer: 4m/s2 ✅

Step-by-step explanation: A vehicle started from rest and its velocity reached 20m/s after 5 seconds. To calculate the acceleration, we can use the formula: acceleration = (change in velocity) / (change in time).

The change in velocity is 20m/s - 0m/s = 20m/s (the final velocity minus the initial velocity)

The change in time is 5 seconds (the time it takes for the velocity to change)

So the acceleration of the vehicle is (20m/s) / (5s) = 4m/s2✅

Answer 2

Answer: The acceleration of the car starting from rest is 4 m/s^2✅

Step-by-step explanation:

It is an exercise of uniformly varied rectilinear movement.

What will be the acceleration, if a vehicle started from rest and its velocity reached 20 m/s after 5 second?

Data:

a = acceleration = ?

Vo = initial speed = 0

Vf = Final speed = 20 m/s

t = time = 5 s

The formula to calculate the acceleration is a = (Vf - Vo)/t, but it tells us that the car starts from rest, that is, it has no initial velocity, we clear the formula and we are left:

a = Vf/t

a = (20 m/s)/5 s

a = 4 m/s²

The acceleration of the car starting from rest is 4 m/s^2✅.