Acoin completes 18 spins in 12 seconds. the centripetal acceleration of the edge of the coin is 2.2 m/s^2. the radius of the coin is m.
a. 0.025
b. 0.037
c. 2.1
d. 8.0
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Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?