Question

A car is at rest at a red light. When the light turns green, it accelerates to a final velocity of 30 m/s. If the car traveled 100 m, what is the magnitude of the acceleration

Answer 1

kinematics

v^2=u^2+2as

v=30, u=0, s=100

900=2a100

9/2=a

4.5m/s^2