Question

UTWP
A particle of mass 20gm is moving with velocity 1m/s. It penetrates 20cm wooden block (fixed) with
average force 2.5 x 10 2N. Find
out speed particle when it come out from block
m/s
m/s​

Answer 1

Answer:

F.x=

2

1

mV

f

2

−

2

1

mV

f

2

⇒−2×10

−2

×02=

2

1

×20×10

−3

(V

f

2

−1

2

)

⇒−0.5=V

f

2

−1

2

V

f

2

=0.5

V

f

=

2

1

m/s

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