Select T-True, F-False, for each statement. If the first is T and the rest F, en
ID: 1286993 • Letter: S
Question
Select T-True, F-False, for each statement. If the first is T and the rest F, enter TFFFFF.
A) Energy is required to do work.
B) Without friction, the sum of the potential and kinetic energies of a body is constant.
C) Energy conservation law for a projectile (no friction): Potential energy increase equals the kinetic energy decrease.
D) Less power is required while slowly lifting a box than while lifting it up quickly.
E) Work is done when the form of energy changes.
F) Work can be done in the absence of motion.
I need the correct answer to give full rating thanks.
Explanation / Answer
A) True ( energy and work are directly related)
B) True ( total M.E. )
C) True ( total energy will be conserved)
D) True ( Power = F *v )
e) True ( from work-energy theorem , total work done = change in K.E>)
f) False (W = F*d for displacement need to move)