CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A bullet of mass 10g strikes a fixed target and penetrates 8cm into it before coming to rest. if the average force of resistance offered by the target is 100N, with what velocity does it strike?

A
100m/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
20m/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
30m/s
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
40m/s
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D 40m/s
Given,
m=10g=0.01kg
s=8cm=0.08m
u=?
v=0m/s
F=100N
Resistance force, F=ma
a=Fm=1000.01=10000m/s2
From 3rd equation of motion,
2as=v2u2
2×0.08×10000=02u2
u2=1600
u=1600=40m/s
The correct option is D.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Second Law of Motion
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon