Question

A car accelerates northwest from 35 to 62 m/s in a time of 14 seconds. What is the acceleration?

a = Vf - Vi / t
A) 27 m/s2 northwest
B) 1.9 m/s2 northwest
C) -1.9 m/s2 northwest
D) 61 m/s

Answer 1

B) 1.9 m/s2 northwest

Step-by-step explanation:

Given parameters:

Initial velocity = vi = 35m/s

Final velocity = vf = 62m/s

Time = 14s

Unknown:

Acceleration = ?

Solution:

Acceleration is the rate of change of velocity with time.

Acceleration =
`(Vf - Vi)/(t)`

Vf is the final velocity

Vi is the initial velocity

t is the time taken

Acceleration =
`(62 - 35)/(14)` = 1.93m/s² northwest