(12. A ball of mass 0.2 kg is thrown against a wall. The ballstrikes t

1.	(12. A ball of mass 0.2 kg is thrown against a wall. The ballstrikes the wall normally with a velocity of 30 maandrebounds with a velocity of 20 m/s. Calculate theimpulse of the force exerted by the ball on the wall.(a)-11Ns(b) 10Ns(c) 1INS(d) -10Ns
Answer» mass=0.2kgvelocity=30 m/srebound velocity =20 m/sfind=force on wall we knowf=maf=0.2(30-20)f=2/10(10)f=2 we knowf=ma

(12. A ball of mass 0.2 kg is thrown against a wall. The ballstrikes the wall normally with a velocity of 30 maandrebounds with a velocity of 20 m/s. Calculate theimpulse of the force exerted by the ball on the wall.(a)-11Ns(b) 10Ns(c) 1INS(d) -10Ns

Answer»

mass=0.2kgvelocity=30 m/srebound velocity =20 m/sfind=force on wall

we knowf=maf=0.2(30-20)f=2/10(10)f=2

we knowf=ma