A ranger in a national park is driving at 39 km/h when a deer jumps onto the road 68 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce an acceleration of -2.80 m/s2. What is the maximum reaction time allowed if the ranger is to avoid hitting the deer?
I'm not sure what formula to use. Please help!
Compute the wavelength in air of ultrasound with a frequency of 48 kHz if the speed of sound is 344 m/s.
m
During a thunderstorm, 4.3 s elapses between observing a lightning flash and hearing the resulting thunder. Approximately how far away in km and mi was the lightning flash?
km
mi
i take vicodin for severe pain (it is legal and prescribed by my doctor)
i'm also having trouble sleeping because i'm traveling with someone who snores, so i'd like to take regular old over-the counter sleeping pills to help me to sleep
i just want to make sure that its not dangerous to mix these two drugs (i know that there are things you're not supposed to mix with vicodin, so i just want to play it safe)
thanks
