Solution Found!
Answer: A 7.0-kg shell at rest explodes into two
Chapter 8, Problem 90P(choose chapter or problem)
Problem 90P
A 7.0-kg shell at rest explodes into two fragments, one with a mass of 2.0 kg and the other with a mass of 5.0 kg. If the heavier fragment gains 100 J of kinetic energy from the explosion, how much kinetic energy does the lighter one gain?
Questions & Answers
QUESTION:
Problem 90P
A 7.0-kg shell at rest explodes into two fragments, one with a mass of 2.0 kg and the other with a mass of 5.0 kg. If the heavier fragment gains 100 J of kinetic energy from the explosion, how much kinetic energy does the lighter one gain?
ANSWER:
Solution 90P
Step 1 of 4:
In the given problem, before explosion the M= 7kg shell is at rest u= 0. This shell explosives into two fragment, one being heavier with mass =5 kg with kinetic energy
= 100 J moving with speed
and the lighter one with mass
=2 kg with kinetic energy
moving with speed
, here we need to calculate the
of the lighter mass after explosion
Given data,
Before explosion,
M= 7 kg
Speed, u=0
After explosion,
Heavier mass ,
Mass =5 kg
Kinetic energy = 100 J
Speed, =?
Lighter mass,
Mass =2 kg
Kinetic energy = ?
Speed, =?