Question

A westward-moving bicycle slows down from 10.0 m/s to 4.0

m/s in 3.0 seconds.
What is the magnitude (i.e., value) and direction of the
acceleration?

Answer 1

Step-by-step explanation:

We have,

Initial speed of bicycle, u = -10 m/s (westward direction)

Final speed, v = -4 m/s (westward direction)

Time, t = 3 s

It is required to find the magnitude and the direction of the acceleration. It is equal to the change in velocity divided by time taken.

`a=(v-u)/(t)\\\\a=((-4)-(-10))/(3)\\\\a=2\ m/s^2`

The acceleration of the bicycle is
`2\ m/s^2`. It is in eastward direction.