An object accelerates at 3 meters per second when a 10-newton (N) force is applied to it. Which force would cause this object to accelerate at 6 meters per second?

What can you increase the strength of an electromagnet by

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.

An object is kept at 45 m high and how much time will it take to reach the ground