Question 257: Laws of Motion

Question

A body of mass 3 kg hits a wall at an angle of 60
o
and returns at the same angle. The impact time was 0.2 sec. The force exerted on the wall

Accepted Answer

Change in momentum = 2 ÃÂ 3 ÃÂ 10 ÃÂ sin60ÃÂ°
= $$60 	imes {{\sqrt 3 } \over 2}$$
Force = Change in momentum/Impact time
$$ = {{30\sqrt 3 } \over {0.2}} = 150\sqrt 3 N$$

Answer

150$${\sqrt 3 }$$ N

Answer

50$${\sqrt 3 }$$ N

Answer

100 N

Answer

75$${\sqrt 3 }$$ N.

Laws of Motion

A body of mass 3 kg hits a wall at an angle of 60 o and returns at the same angle. The impact time was 0.2 sec. The force exerted on the wall

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