HELP IN A TEST I CAN'T FAIL HELPPP Two ppl are dragging a canoe across a level beach using light ropes. Person A applies a force of 40 N and person B applies a force of 80 N. The force of friction exerted by the beach on the canoe is 100 N. What is the net force on the canoe?
a) 20 N forward
b) 220 N forward
c) 220 N backward
d) 20 N backward

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s.calculate eddy’s power rating

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.

You can melt ice by applying pressure because the solid/liquid line has a slope.