Question

3. A car accelerates uniformly from 18 km/h to 36 km/h
in 5 s. Calculate the acceleration of the car.
Ans. 1 m/s
4. Starting from rest, Nikita paddles her bicycle to attain
a velocity of 5 m/s in 25 s. Then she applies brakes
so that the velocity of the bicycle comes down to
4 m/s in the next 5 s. Calculate the acceleration of
the bicycle in both the cases. Ans. 0.2 m/s - 0.2 m/s​

Answer 1

Answer:

Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2). Acceleration is also a vector quantity, so it includes both magnitude and direction.