The main difference between the internal combustion engine and the diesel engine is that the diesel engine.
a. does not have a crankshaft.
b. as no connection rods.
c. has no ignition system.
d. does not utilize pistons.

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33