Question

A bus starting from a rest moves with uniform acceleraton of 0.1 m/s for 2 minutes . find the distance travelled and speed acquired

Answer 1

Answer:

Here we have, Initial velocity (u) = 0

Acceleration (a) = 0.1ms-2

Time (t) = 2 minute = 120 second

(a) The speed acquired:

We know that, v = u + at

⇒

v

=

0

+

0.1

m

/

s

2

×

120

s

⇒

v

=

120

m

/

s

Thus, the bus will acquire a speed of 120 m/s after 2 minute with the given acceleration.

(b) The distance travelled:

We know that,

s

=

u

t

+

1

2

a

t

2

⇒

s

=

0

×

120

s

+

1

2

×

0.1

m

/

s

2

×

(

120

s

)

2

=

1

2

×

1440

m

=

720

m

Thus, bus will travel a distance of 720 m in the given time of 2 minute.

Answer 2

the body is Start from rest so u(initial velocity)=0

acceleration=0.1m/s^2

time=1min=60sec

2min =120 sec

s=u+1/2(at)^2

s=0+1/2(0.1)×(120)^2

s=1/2(0.1)×(14400)

s=7200m

hope it helps you!..