Question

A car accelerates uniformly in a straight line from rest at the rate of 3.7 m/s2

What is the speed of the car after it has traveled 63 m? Answer in units of m/s.
How long does it take the car to travel 63 m? Answer in units of s

Answer 1

Step-by-step explanation:

Using equations of motion :

(A) we know that,

u = 0

a = 3.7 m/s^2

S = 63

`{v}^(2) = {u}^(2) + 2as`

`v = √(0 + 2 * 3.7 * 63) = 21.6 \: m{s}^( - 1)`

(B)

v = u + at

21.6 = 0 + 3.7 * t

t (time to reach 63 m) = 5.83 seconds