Question

An object moves with a velocity of 20 m/s^2.It accelerates at a rate of 10 m/s^2.Find
1. Find distance by it in 10 seconds
2. Time taken to gain a speed of 100 m/so

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Answer 1

Answer:

1.100

2.10 Hope this will help you. Follow me.

Answer 2

Given :-

Initial Velocity :- 20m/s^2

Acceleration :- 10m/s^2

To find :-

Distance covered in 10 seconds ?

Time taken to gain speed of 100m/s ?

Solution :-

• s = ut + ½at² [Second Equation of motion]

• v = u + at [First equation of motion]

✭ Distance Covered in 10 seconds :

→ s = ut + ½at²

→ s = 20 × 10 + ½ × 10 × 10²

→ s = 200 + 5 × 100

→ s = 200 + 500

→ Distance = 700 m

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✭ Time taken :

→ v = u + at

→ 100 = 20 + 10 × t

→ 100 - 20 = 10t

→ 80 = 10t

→ 80/10 = t

→ Time = 8 sec

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