a bullet leaves a rifle with a velocity of 100 m/s and the rifle [mass= 2.5kg] recoils with a velocity of 1m/s. find the mass of the bullet . give solution [ ans 0.25 kg]
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Answered by
3
Hello Mate!
Mass of bullet = ?
Mass of rifle = 2.5 kg
Velocity of rifle and bullet = 1 m/s and 100 m/s respectively.
m1u1 + m2u2 = m1v1 + m2v2
(2.5)(1) + (m2)(100) = (2.5)(0) + (m2)(0)
2.5 + 100m2 = 0
100m2 = -2.5
m2 = - 2.5 / 100
m2 = - 0.025 kg or - 25g
Negative sign shows that bullet is moving in direction opposite to rifle.
Have great future ahead!
Mass of bullet = ?
Mass of rifle = 2.5 kg
Velocity of rifle and bullet = 1 m/s and 100 m/s respectively.
m1u1 + m2u2 = m1v1 + m2v2
(2.5)(1) + (m2)(100) = (2.5)(0) + (m2)(0)
2.5 + 100m2 = 0
100m2 = -2.5
m2 = - 2.5 / 100
m2 = - 0.025 kg or - 25g
Negative sign shows that bullet is moving in direction opposite to rifle.
Have great future ahead!
Answered by
1
Answer:
Mass of bullet would be 25g.
Explanation:
According to conservation of momentum
m1v1 = m2v2
m1 = m2v2 / v1
m1 = (2.5 * 1) / 100
m1 = 0.025kg
m1 = 25g
Therefore, mass of bullet is 25g.
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HOPE IT HELPS......
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