Which of the following statements are true of a projectile? List all that apply
A.the acceleration is pointed downward
B.the acceleration is directed upward as the projectile rises towards its peak.
C.the accelerlation value is zeroat the peak of the projectile's trajectory.
D the acceleration is increasing as the projectile falls downward from its peak.
E.the acceleration is decreasing as the projectile rises upward towards its peak.
F.the accelreation is a constant value.
G.the accleration value is dependant upon the mass of the projectile.
H. none of these
2006-11-01 15:22:37 · 6 answers · asked by "G" 1 in Science & Mathematics ➔ Physics
I think F is the answer. Taking acceleration due to gravity is constant at 9.81ms^-2, but this assumes that air resistance is neglected, and g is a constant.
If air resistance is NOT neglected, and acceleration due to gravity is not taken to be constant, H is the correct answer. The rest of the options are wrong.
2006-11-01 17:30:43 · answer #1 · answered by Wonderous 2 · 0⤊ 0⤋
The accln in Projectile motion is constant in magnitude and Direction POINTING DOWNWARD (TOWARD THE CENTER OF THR EARTH) Its value is 'g' at the given position where you are working with the projectile( assuming it is over a small distance ).If however the projectile is to cover large distances the accln will be different at different pts as that of 'g' also changes from pt to pt.(e g space ship if projected and left to itself .)
2006-11-01 23:48:39 · answer #2 · answered by gnparvate 2 · 0⤊ 0⤋
Bet you can't, since you're the one posting.
Where does the acceleration come from?
2006-11-01 23:27:01 · answer #3 · answered by arbiter007 6 · 2⤊ 0⤋
A and F
2006-11-01 23:27:56 · answer #4 · answered by Pascal 7 · 0⤊ 0⤋
D and E, possibly F
2006-11-01 23:27:49 · answer #5 · answered by americanmimeboy 4 · 0⤊ 1⤋
You're right I can't figure it out.
2006-11-01 23:29:05 · answer #6 · answered by ~*StarryEyedSurprise*~ 2 · 0⤊ 0⤋