Projectiles launched at an angle review
|Launch angle||The angle of a projectile’s initial velocity when measured from the horizontal direction. These angles are typically or less.|
Vectors of projectiles launched at an angle
Constant vertical acceleration
No horizontal acceleration
Horizontal velocity is constant
Vertical velocity changes direction and magnitude during trajectory
Analyzing angled launch trajectories
Components of initial velocity
Launch angle trajectory comparisons
Higher launch angles have higher maximum height
Higher launch angles have greater times in the air
Projectile maximum horizontal distance depends on horizontal velocity and time in air
- People mix up horizontal vs. vertical components of acceleration and velocity. The acceleration is a constant downwards (see figure 1) because gravity is the only source of acceleration. This acceleration only changes the vertical velocity, so the horizontal velocity is constant.
- People can’t remember what is zero at the maximum height. Vertical velocity is zero at this point, but there is still horizontal velocity and acceleration is still down.