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1. A 10 kg mass is initially at rest and experiences a force with profile 3...

1. A 10 kg mass is initially at rest and experiences a force with profile 3 t N s. What is the momentum change of the mass after 4 s? What is the masses velocity magnitude?

2. A 20 kg child is on a swing that hangs from 3.0 m chains, as shown in the figure below. What is her speed vi at the bottom of the arc if she swings out to a 45o angle before reversing direction?

Find the max potential energy of the child?

Find the max kinetic energy of the child (use conservation of energy)?

Compute the speed for max kinetic energy?

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