Which object has larger kinetic energy: a 500-kg object moving ...

[tingc95]

Which object has larger kinetic energy: a 500-kg object moving with a speed of 40 m/s or 1000-kg object moving at 20 m/s?
 
  A) the 500-kg object moving at 40 m/s
  B) Both have same kinetic energy.
  C) the 1000-kg object moving at 20 m/s
  D) Kinetic energy is independent of mass.
  E) Kinetic energy is independent of speed.

Question 2

The density of a solid object is defined as the ratio of the mass of the object to its volume. The dimension of density is
 
  A) M/L.
  B) L3/M.
  C) M L-3.
  D) MLT.
  E) ML.

[verrinzo]

Answer to Question 1

A

Answer to Question 2

C

[tingc95]

Gracias!

[rleezy04]

Thanks for the timely response, appreciate it