A car travels a distance of 100 metre with constant acceleration and a

1.	A car travels a distance of 100 metre with constant acceleration and average velocity of 20 m/s.The final velocity acquired by the car is 30 m/s,the initial velocity and acceleration of the car is
Answer» DISTANCE (s) = 100 m average velocity (x) = 20 m/s final velocity (v) = 30 m/s let initial velocity be U average velocity = $\frac{u+v}{2}$ $20=\frac{u+30}{2}$ 40 = u + 30 u = 10 so, initial velocity (u) = 10 m/s let us take average velocity to be the speed of the car. time = $\frac{distance}{speed}$ time = $\frac{100}{20}$ time = 5 s let acceleration be a $a=\frac{v-u}{t}$ $a=\frac{30-10}{5}$ $a = \frac{20}{4}$ a = 5 m/s²