A ball of mass 5.0kg hits a smooth vertical wall normally with a speed of 2ms-1 and rebounds with the same speed. Determine the impulse experienced by the ball
A
20.0kg ms-1
B
10.0kg ms-1
C
5.0kg ms-1
D
1.3kg ms-1
E
0.0kg ms-1.
Verified Correct Answer: A.
Physical Principles & Numerical Solution
Impulse = Ft = mu - (-mu)
= mu + mu = 2mu = 2 x 5 x 2 = 20kgms-1
Source: Myschool Past Questions Archive (Record #25201)