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1. A 25 kg child riding a bicycle at 9.1 m/s slams on their brakes to...

1. A 25 kg child riding a bicycle at 9.1 m/s slams on their brakes to stop in 1.7 s.  What is the magnitude of the net force applied by the brakes to stop the child?

2. A 0.5 kg book is resting on a table. A student leans their hand on the book, exerting a 19 N downward force on the book. What is the magnitude of the Normal Force acting on the book?   (Use 9.81 m/s2 for gravitational acceleration.)

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