Question

If the velocity of a bullet
becomes in of it's intial relocity
aftes a
displacement ex' The it will
comes to rest after a further
displacement of yo
3
uln
y-​

Answer 1

Answer:

ANSWER

The distance traveled by the particle in the last 2 seconds = distance traveled by particle in nth second- distance traveled by particle in (n-2)th second

So,

s=

2

1

an

2

−

2

1

a(n−2)

2

s=

2

1

a[n

2

−n

2

+4n−4]

s=

2

a

[4n−4]

s=(2n−2)a=2a(n−1).........(1)

Now,

Velocity, v=acceleration×time

v=a×n

a=

n

v

...........................(2)

Substitute value of 'a' from (2) to (1) we get,

s=

n

2v(n−1)

Answer 2

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