Question

o) A boy is standing 40m
behind a bus Bus
starts
from rest with
acc 1m/s² however boy
starts to run
with a constant velocity 9m per second towards
the bus at
same instant.will the boy can catch the
bus and
after how much time?
​

Answer 1

Answer:

Let after time 't'man will catch the bus

For bus

x=x  

0

​  

+ut+  

2

1

​  

at  

2

x=40+0(t)+  

2

1

​  

(1)t  

2

 

x=40+  

2

t  

2

 

​  

 ..................(1)

For man,       x = 9t ................(2)

From (1) and (2)

40+  

2

t  

2

 

​  

=9tt=8sort=10s.

Answer 2

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hope it helps you

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