A projectile is any object that is thrown or launched into the air and moves along a curved path due to the influence of gravity.
The formula for projectile motion is: x = x0 + v0t + (1/2)at2 for horizontal motion and y = y0 + v0t + (1/2)at2 for vertical motion. This formula describes the displacement of an object in the x and y directions over time.
The angle of projection can be calculated using the formula θ = tan-1(vy/vx), where vy is the vertical velocity and vx is the horizontal velocity of the projectile.
The trajectory of a projectile is affected by several factors, including the initial velocity, angle of projection, air resistance, and the force of gravity. Other factors such as wind and air density can also have an impact on the trajectory.
To solve a projectile homework question, you will need to identify the known variables such as initial velocity, angle of projection, and time. Then, use the projectile motion formula to calculate the unknown variable, such as the maximum height or range. It is also helpful to draw a diagram and label the variables to better understand the problem.