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

Respuesta :

Explanation:

Using equations of motion :

(A) we know that,

u = 0

a = 3.7 m/s^2

S = 63

[tex] {v}^{2} = {u}^{2} + 2as[/tex]

[tex]v = \sqrt{0 + 2 \times 3.7 \times 63} = 21.6 \: m{s}^{ - 1} [/tex]

(B)

v = u + at

21.6 = 0 + 3.7 * t

t (time to reach 63 m) = 5.83 seconds