Curved motion {trajectory, motion}| results if object velocity has components in different directions. Thrown balls have trajectories, because one velocity is from throwing and one velocity is from gravity.
angle
Maximum horizontal distance results from throwing ball at 45-degree angle to horizontal. Ball thrown at an angle, and ball thrown same speed at complementary angle, travel same distance horizontally. Balls thrown at 30 degrees and 60 degrees travel same distance horizontally.
speed
If air resistance is zero, speed that ball has when it comes down is same speed that it had when it starts up.
top
Under gravity, at trajectory top, horizontal acceleration and vertical velocity are zero.
Physical Sciences>Physics>Kinetics
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Date Modified: 2022.0224