The speed of sound in air at 0 degree Celcius is 331 m/s. It increases by 0.6 m/s every 1 degree rise in temperature. While hiking through a canyon, Scary Carrie lets out a scream. An echo (reflection of the scream off a nearby canyon wall at a distance of 220 m) is heard 1.26 seconds after the scream. Calculate the temperature of air. Show all work.

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?