One experimental observation that demonstrates Einstein's ideas ...

[waynest]

One experimental observation that demonstrates Einstein's ideas on the relativity of time, is
 
  A) electromagnetic waves from the early stages of the development of the universe have slower rates of vibration.
  B) muons live longer when moving rapidly than they do when they are at rest.
  C) a laser beam emitted from an orbiting satellite is observed from Earth.
  D) rapidly-rotating neutron stars spin more slowly than they would if they weren't moving rapidly away from us.
  E) the recent discovery of very fast-moving particles known as tachyons.

Question 2

One second after a ball rolls off the edge of a horizontal surface at a speed of 10 m/s,
 
  A) its vertical component of velocity is 10 m/s.
  B) its speed is about 14 m/s.
  C) both of these
  D) none of the above

[huda]

Answer to Question 1

B

Answer to Question 2

Answer: C

[waynest]

Gracias!

[miss.ashley]

TYSM