- In the absence of air resistance, what effect does the mass of a projectile have on its trajectory?
- Compare the horizontal distance the object travels in the first second with the horizontal distance it travels in the second second.
- Can you find evidence that the vertical velocity changes over time?
- What and where are the forces that cause motion in the vertical and horizontal directions? What forces are acting at time t=0? at a point on the way up? at the top of the trajectory? at a point on the way down?
