With no air resistance a projectile fired horizontally maintains ...

[sjones]

With no air resistance a projectile fired horizontally maintains its horizontal component of velocity because
 
  A) no forces act on it.
  B) no horizontal forces act on it.
  C) of no initial vertical component of velocity.
  D) all of the above
  E) none of the above

Question 2

An athlete participates in an interplanetary discus throw competition during an Olympiad that takes place on a planet where the free-fall acceleration is 9.7 m/s2.
 
  He throws the discus with an initial velocity of 20 m/s at an angle of 60 from the vertical. Neglecting air resistance and the height of the discus at the point of release, what is the range of the discus? A) 21 m
  B) 60 m
  C) 36 m
  D) 40 m
  E) 32 m

[katara]

Answer to Question 1

Answer: B

Answer to Question 2

C

[sjones]

Gracias!

[momolu]

Excellent