Answer to Question #175292 in Physics for Jude

Question

Draw the velocity time graph of a car that start with an initial velocity of 4.2ms and accelerate uniformly at 5ms until it attains a maximum velocity of 13.9ms it then maintain the speed for seconds

Answer 1

The time required for the car to accelerate from 4.2 m/s to 13.9 m/s at 5 m/s² is

$$t=\frac{v_2-v_1}{a}=\frac{13.9-4.2}{5}=1.94\text{ s}.$$