4. A car accelerates at 0.5 m/s2 starting from rest.

Question

a. After 4 s what is its velocity?
b. After 4 s, how far has it traveled from its starting position?

Answer 1

a. V = a*t = 0.5m/s^2 * 4s. = 2 m/s.

b. d = 0.5a*t^2 = 0.5*0.5*4^2 = 4 m.