Question

can any one help me please...Im stucked in it..

Answer 1

The Correct Answers are A) and C)

Using Conservation Of Momentum

Wedge is Initially at Rest.. Ball is Moving With 10 m/s initially

4*0 - 1*10 = - 4*4 + 1*V1

[Minus If Of Because of the Direction]

[V1 is the Velocity of Ball After Collision]

So,

-10 + 16 = V1

V1 = 6m/s

So, speed of the ball after Collision is 6m/s

And Since we Know That Impulse = Change is momentum

J = m( final velocity - initial velocity)

J = 4*(4 - 0)

J = 16 N-s