# Posts by Ryland

Total # Posts: 3

**physics**

A 7 kg purse is dropped from the top of the Leaning Tower of Pisa and falls 53 m before reaching the ground with a speed of 17 m/s. What was the average force of air resistance? F_{average} =

**Trig**

Find the exact value of each of the following using reference angles. a)sin 225degrees b) cot 120degrees

**Algebra**

For this circle, a 50 degree central angle cuts off an arc of 6 in. What is the circumference?