Which of the following statements is true:

a) a acceleration of free fall objects on Earth is approximately 9.8 m/s^2 [down]
b) heavier objects in free fall accelerate faster than light objects
c) in projectile motion, the initial speed is always equal to the final speed
d) none of the statements are true

Question

Which of the following statements is true: 

a) a acceleration of free fall objects on Earth is approximately 9.8 m/s^2 [down] 
b) heavier objects in free fall accelerate faster than light objects 
c) in projectile motion, the initial speed is always equal to the final speed 
d) none of the statements are true

anonymous · Answer

'b' is clearly false

anonymous · Answer

ok, would the answer then be a?

anonymous · Answer

about 'c',if u are neglecting the air drag,then
'c' is true for horizontal direction

anonymous · Answer

'a' yeah,[but for the objects that are not very far from the surface of the Earth]
: )

anonymous · Answer

ok thanks!