In a practical machine, the power output is _______ the power input.

Question

    
A. larger than
B. multiplied by
C. equal to
D. smaller than 

D?

Answer 1

Good heavens! I have no idea!

Answer 2

 The main difference between speed and velocity involves 

  
A. weight.
B. gravity.
C. distance.
D. direction.

D?

Answer 3

efficiency is maximum 100%, and that is impossible.
Output less than input
D is correct

Yes !!!
for speed you need a speedometer
for velocity you need a speedometer AND a compass
speed = scalar
velocity = vector

Answer 4

Yes.. velocity has a direction and speed does not.

also, above the right answer is D.

Answer 5

Thank you guys! :)