Solve for your unknown variable a =

Question

A car slows down from 45 m/s to rest in a distance of 91 m.

What was its acceleration, assumed constant?

Solve for your unknown variable a =

Answer 1

A car slows down from 45 m/s to rest in a distance of 91 m.

What was its acceleration, assumed constant?

Initial velocity = 45m/s Final Velocity = 0

Distance = 91 m

Using V = Final Velocity , U = Initial Velocity , S= distance , a= Acceleration

V² = U² +2aS

0= 45*45 +2a*91

a= - 45*45/2*91= -2025/182 m/s^{2 (} Negative means deceleration)