Question

A bus starts frim rest and picks up a velocity of 60 m/s in 30 seconds.Calculate the uniform acceleration of the bus in m/s^2

id on deletion take point:)​

Answer 1

Explanation:

Let man will catch the bus after time t.Since the distance from man position is same for both at time t

⇒ Distance covered by bus = Distance covered by man -48

⇒

2

1

at

2

=vt−48

⇒

2

1

(1)t

2

=10t−48

⇒t

2

−20t+96=0

⇒(t−12)(t−8)=0

⇒t=8s (minimum value) or t=12s

So,at t=8s,the man will catch the bus

Answer 2

Answer:

2 m/s^2

Explanation:

u = 0

v = 60m/s

t = 30sec

Now we know that, v = u + at

so we can write it as,

60 = 0 + a(30)

60 = a(30)

a = 60/30

a = 2

hence acc. is 2 m/s^2