gun fires A bullet of mass 50 gram with the bullet moving with the velocity of hundred metre per second strikes a sandbag and gets in the in the dead after travelling 10 cm calculate the force extracted by the sun bullet and the time taken by the bullet to come in rest
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Mass of bullet (m) = 50 g = 0.050 kg
initial velocity of bullet (u) = 100m/s
distance travelled by bullet (s) = 10 cm = 0.1 m
We know ,
v² - u² = 2 as
0 - (100)² = 2 x a x 0.1
-1000 /0.1 = 2a
-10000 = 2a
a = - 5000 m/s²
resistive force = m x a
= 0.05 x(- 5000)
= - 250 N
Time taken
v = u + at
0 = 100 - 5000 t
-100 /5000 = t
t = 0.02 seconds
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