15. A bullet moving with a speed of 300 m/s penetrates the body 5.0 cm deep. Calculate the force exerted by the body on the bullet, if the mass of the bullet is 10 g? Ans. 9000 newton.
Answers
Answered by
0
Answer:
s=0.625
Explanation:
s=0.625m
Given,
mass=5g
speed=500m/s
force=1000N
(a) kinetic energy=
2
1
×m×v×v
m=5g=
1000
5
kg
v=500
⇒
2
1
×
1000
5
×500×500
=625J
(b) force=mass×acceleration
1000=
1000
5
×acceleration
Acceleration=1000×
5
1000
=200000m/s
2
using the third equation of motion
v
2
=u
2
+2as
(500)
2
=0+2×200000×s
250000=400000×s
s=0.625m
Answered by
0
Answer:
yes you are right
Similar questions