A hunter has a maching gun that can fire 50g bullets with a velocity of 150"ms"^(-1). A 60 kg tiger springs at him with a velocity of 10"ms"^(-1). How many bullets must the hunter fire into the target so as to stop him in his track ?

A hunter has a maching gun that can fire 50g bullets with a velocity o

1.	A hunter has a maching gun that can fire 50g bullets with a velocity of 150"ms"^(-1). A 60 kg tiger springs at him with a velocity of 10"ms"^(-1). How many bullets must the hunter fire into the target so as to stop him in his track ?
Answer» SOLUTION :Given m =MASS of bullet = 50 gm = 0.50 kg M = mass of tiger = 60 kg v= Velocity of bullet = 100 m/s V = Velocity of tiger =-10m/s (∴ It is coming from opposite direction n =no. of BULLETS fired PER second at the tiger so as to stop it.) `P_i =0,` before firing ...(i) `P_f= n(mv) + MV ...(ii)` From the law of conservation of MOMENTUM `rArr 0=n(mv)+MV` `rArr n=MV)/(mv)` `=(-60 xx (-10))/(0.05 xx 100)=120`