Question

a scooterist is moving with uniform velocity 15 metre per second on a straight road he notices that your buses 50 metre ahead of him starting from rest with an acceleration to metre per second square the time after which bus will overtake the scooterist is​

Answer 1

Dear Student,

◆ Answer -

10 s

● Explanation -

Let t be the time after which bus overtakes scooter.

Distance covered by scooter in time t is -

s = vs × t

s = 15t ...(1)

Bus already has 50 m benefit.

s = 50 + ub.t + 1/2 at^2

s = 50 + 0×t + 1/2 × 2 × t^2

s = 50 + t^2 ...(2)

From (1) & (2),

15t = 50 + t^2

t^2 - 15t + 50 = 0

t = 10 s or t = 5 s

At 5 s, scooterist will be overtaking the bus. And at 10 s bus will overtake the scooterist.

Hope this helps you...

Answer 2

Answer:

your answer is 10s....................