Questions
A 3 kg ball strikes a heavy rigid will with a speed of 10 m/s at an angle of 60". It gets reflected with the same speed and angle as shown in fig. If the
ball is in contact with the wall for0.20 s, what is the average force exerted on the ball by the wall ?
detailed solution
Correct option is C
We know that F=Îp/ÎtHere Îp=2mvsinâ¡Î¸=2Ã3Ã10sinâ¡60â =60Ã(3/2)=303Given that Ît=0.2sâ´F=3030â 2=1503.Talk to our academic expert!
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Statement I : The familiar equation mg = R for a body on a table is true only if the body is in equilibrium.
Statement II : The equality of mg and R has no connection with the third law.
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