A branch falls from a tree. How fast is the branch moving after 0.28 seconds? A. 2.7 m/s
B. 4.4 m/s
C. 3.1 m/s
D. 1.3 m/s
PLEASE HELP

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?