Problem #2
a nerve conduction velocity test (ncv) is an electrical test that is used to evaluate the function of nerves.
a ncv on a patient's sciatic nerve (length of 0.90 m) reveals a conduction velocity of 30 m/s. how long
did it take the impulse to travel along the nerve?

problem #3
two boats start together and race across a 64 km wide lake and back. boat a goes across at 64 km/h and
returns at 64 km/h. boat b goes across at 32 km/h and its crew, realizing how far behind it is getting,
returns at 96 km/h. turnaround times are negligible, and the boat that completes the roundtrip first wins.
a) which boat wins? (or is it a
b) this boat won by how much? ( 64 kilometers)
c) what is the average velocity (in km/hr) of the winning boat?

Your starship, the aimless wanderer, lands on the mysterious planet mongo. as chief scientist-engineer, you make the following measurements: a 2.50-kg stone thrown upward from the ground at 14.0 m/s returns to the ground in 5.70 s ; the circumference of mongo at the equator is 2.20×10^5 km ; and there is no appreciable atmosphere on mongo. (a) the starship commander, captain confusion, asks for the following information: what is the mass of mongo? (b) if the aimless wanderer goes into a circular orbit 2.20×10^4 km above the surface of mongo, how many hours will it take the ship to complete one orbit? (c) an unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 44.0 km . to the dismay of scientists on earth, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 23.0 m/s . if nothing is done to correct its orbit, with what speed (in km/h) will the spacecraft crash into the lunar surface?