1. In reference to Figure 7, how does the force that Cassy exerts on the bricks compare with the force exerted on her hand?
2. How will the impulse resulting from the impact differ if her hand bounces back upon striking the bricks?
Question 5.S&C.3: 1. In reference to Figure 7, how does the force that Cassy e...
1. In accordance with Newton’s third law, the forces will be equal. Only the resilience of the human hand and the training she has undergone to toughen her hand allow this feat to be performed without broken bones. Whapping bricks with bare hands is not recommended!
2. The impulse will be greater if her hand bounces from the bricks upon impact. If the time of impact is not correspondingly increased, a greater force is then exerted on the bricks (and
her hand!).
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