Assignment 4-2.pdf - Rowan Introduction to Astronomy...

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Rowan Introduction to AstronomyActivity #4: Momentum, Torque, Gravity/WeightName: _______________________________________________ Score: _________________________________1. In the figure below, two balls collide. Ball A with mass m1= 30 kg is initially moving at 20 m/s. Ball B with massm2= 9 kg is moving at 10 m/s. After the collision, ball A is moving at 10 m/s. How fast is ball B moving? Assumethat we have an elastic collision between the two balls. Momentum is conserved so the momentum before the
2. Why is a torque wrench useful in tightening bolts on an engine head cover that sits on a gasket between it and theengine block? What might happen if a regular wrench is used to tighten the bolts? The torque wrench allows one to

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