Question

calculate the height of the wooden block if it were to have a GPE of 300j

Answer 1

Answer:

yes

Explanation:

Given,

Mass of wooden block is 1.25kg

mass of bullet is 5g=0.0

maximum height is 22cm=0.22m

We know that final velocity is

v

b

=

2gh

Substitute all value in above equation

v

b

=

2×9.8×0.22

v

b

=2.08m/s

As Momentum is conserved before and after collision therefore,

m

1

v

i

+m

2

v

2

=(m

1

+m

2

)v

b

initial velocity of wooden block is zero therefore substitute all value in above equation

0.005×v

i

=(0.005+1.25)v

b

v

i

=251v

b

m/s

v

i

=251×2.08

v

i

=522.08m/s

Hence,

initial velocity of bullet is 522.08m/s