Question

If the units of your answer are kg ∙ m2/s3, which of the following types of quantities could your answer be?
A. kinetic energy
B. potential energy
C. force
D. power
E. work

Answer 1

Answer:

  D.  power

Explanation:

  kg represents mass

  (m/v)² represents velocity squared

Then kg·m²/s² represents mass·velocity² = kinetic energy or potential energy or work.

  kg·m²/s³ will be the rate of doing work, which is power

Answer 2

Answer:

D. Power

Explanation:

Power is defined as “time rate of change in energy”. So,

P = W/t  

P = (kgm^2/s^2)/s

P = kgm^2/s^3

Now,

Units of potential Energy = units of kinetic energy = units of work = Fd = kgm^2/s^2

Units of force = F = ma = kgm/s^2

Hence,(D) Power is the right answer .