If the magnitude of velocity of an object is 10m/s and mass is 50g then what we be the momentum of that object.
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If the magnitude of velocity of an object is 10m/s and mass is 50g then what we be the momentum of that object.
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Answer:
Given : m=0.05 kg h=10 m
Kinetic energy of ball just before collision E
i
=mgh=0.05×10×10=5 J
Thus initial momentum of the ball P
i
=
2mE
i
=
2(0.05)(5)
=0.707 N-s (downwards)
Kinetic energy of ball just after collision E
f
=
4
E
i
=
4
5
=1.25 J
Thus final momentum of the ball P
f
=
2mE
f
=
2(0.05)(1.25)
=0.353 N-s (upwards)
∴ Impulse I=ΔP=P
f
−(−P
i
)=0.353+0.707=1.06 N-s
Verified answer
ɢɪᴠᴇɴ:
ᴍᴀss ᴏғ ʙᴏᴅʏ: 50ɢ=0.05 ᴋɢ
ᴠᴇʟᴏᴄɪᴛʏ = 10 ᴍ/s
ᴛᴏ ғɪɴᴅ:
ᴍᴏᴍᴇɴᴛᴜᴍ (ᴘ)=?
sᴏʟᴜᴛɪᴏɴ:
ᴛʜᴇ ғᴏʀᴍᴜʟᴀ ᴛᴏ ғɪɴᴅ ᴍᴏᴍᴇɴᴛᴜᴍ ɪs
ᴘ=ᴍᴠ
ʜᴇʀᴇ ᴍ ɪs ᴍᴀss ᴀɴᴅ ᴠ ɪs ᴄᴏɴsᴛᴀɴᴛ ᴠᴇʟᴏᴄɪᴛʏ
ᴘ= 0.05×10
ᴘ=0.5ᴋɢ ᴍ/s
ʜᴇɴᴄᴇ ᴍᴏᴍᴇɴᴛᴜᴍ ᴡɪʟʟ ʙᴇ 0.5ᴋɢᴍ/s.
sᴏʟᴠᴇᴅ✔︎