Question

A car is travelling at a velocity of 20m/s. After 30sec it covers a distance of 1200 m. Calculate the acceleration of the car and the final velocity of the car.​

Answer 1

Answer:

Acceleration: $a = 1,3333 \frac{m}{s^{2} }$

Final velocity: $v = 60 \frac{m}{s}$

Explanation:

To calculate the acceleration, you start from the formula:

$s = v_i t+\frac{1}{2}at^{2}$

Thus:

$a = \frac{ 2(s - v_it)}{t^{2}}$

Now that you have the accelration, you can use the this formula to calculate the final speed:

$a = \frac{v_f - v_i}{\Delta t}$

Thus:

$v_f = a \Delta t + v_i$