4a. An airplane flies 1245.7 miles with a constant
speed of 740 mph and
another 4080 miles
with
a constant speed
of 800 mph. What is its
average speed for the
total trip?

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.