In an archery practice an arrow was realesed from a bow with a velocity of 20m/s it strikes and slopes find at what rate the aarrow was aaccelarated

Answer 1

Ah, I initially thought you had too little information, but in fact this is theory (or should be). Depends, if you are neglecting dissipative forces like drag, this is quite easy.

So in projectile motion (the arrow is a projectile), we like to separate our axes into their respective components. This leaves us with x and y components (no z axis).

If we set the coordinate system with the y axis increasing up into the sky, and the x axis increasing away from the archer, this should give us two components of acceleration.

Well, not sure if you guys have done forces, but like I said we are going to neglect dissipative forces like air drag. This should leave only one exact force which acts on the arrow once in projectile motion.

This is the force of gravity. Considering gravity likes to act down toward the Earth (think, does our coordinate system describe a direction pointing down to the Earth), that should be simple. If you figure out where gravity acts, but are wondering about the other component, then step back for second. If gravity is hypothetically the only force acting, what could that possible mean for the other axis component?