What is the efficiency of a cyclist who exerts 900 N across
200 meters to overcome a
resistance force of 760 N while
being chased by a cow?
Efficiency (%) = [Work Output /
Work Input] x 100

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Write a polynomial function with the given zeros x= -1,0,2show your work