A car travelling at velocity of 20 km/hr, accelerates for 4 secs to reach a velocity of 60 km/hr. Find the acceleration in m/s² and the distance covered in the 4 secs.

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Question 1: A car travelling at velocity of 20 km/hr, accelerates for 4 secs to reach a velocity of 60 km/hr. Find the acceleration in m/s² and the distance covered in the 4 secs.

Step 1: Convert initial and final velocities from km/hr to m/s.
Initial velocity, $u = 20 km/hr = 20 \times \frac{1000 m}{3600 s} = \frac{200}{36} m/s = \frac{5