Physics, asked by karyatiVadhar3141, 17 days ago

If the velocity of a train starting from rest becomes
72 km/h in 400 s, what is its acceleration?

Answers

Answered by gauravshende21577521
1

Answer:

a) Here, u=0,

v=72km/h

=

60×60

72×1000

=20m/s

t=10,min=600s

Acceleration a=

t

v−u

=

6000

20m/s−0

=

30

1

ms

2

b) v

2

=u

2

+2as

(20)

2

=0

2

+2×

30

1

×s

400=

15

1

×s

s=400×15

=6000m

=6km

Similar questions