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
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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
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