A bullet of mass 25 gm moving with a velocity
of 150 m/s, strikes a target
and is brought to rest in one tenth of a sec, find
the impulse & average
force of impulse
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mass of the bullet,
m = 25 gm = 25/1000 = 0.025 Kg
initial velocity, u = 150 m/s
Final Velocity, v = 0 m/s
time to bring it to rest = 1/10 sec
Impulse = Force = mass × acceleration
F = m × a
F = m × [ ( v - u ) / t ]
F = 0.025 × [ ( 0 – 150 ) / ( 1 / 10 ) ]
F = 0.025 × [ – 150 × 10 ]
F = 0.025 × ( – 1500 )
F = – 37.500 kgm/s²
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