Question

car accelerates from 20 km per hour to 80 km per hour in 20 seconds calculate the acceleration and distance covered by the car in that time​

Answer 1

Answer:

5/6 m/s² & 278 m

Explanation:

Acceleration = Change in velocity / Time taken

= (80 kmph - 20 kmph) / (20 s)

= (60 kmph) / (20 s)

= (60 × 5/18 m/s) / (20 s)

= 5/6 m/s²

Distance covered in this time

Use equation of motion

S = ut + 0.5at²

= (20 × 5/18 m/s × 20 s) + (0.5 × 5/6 × (20 s)²)

≈ 278 m