For the test that I don't wanna take :(
|
projectile
|
object moving through the air, either initially thrown or dropped, subject only to the effects of gravity
|
|
tragectory
|
the path of a projectile, which is parabolic in two dimensions
|
|
projectile motion
|
movement of an object through the air, subject only to the effects of gravity
|
|
range
|
the maximum horizontal distance a projectile travels
|
|
launch angle
|
The angle of a projectile’s initial velocity when measured from the horizontal direction. These angles are typically 90° or less
|
1.) Remember: What happens in the vertical direction does NOT affect the horizontal direction, and vise versa.- An object's horizontal position, velocity, or acceleration does not affect it's vertical position, velocity, or acceleration. These variables are only related by t time.2.) It's easy to forget that horizontal motion has constant velocity (and zero acceleration) while vertical motion has constant acceleration- This means for projectile motion, the initial velocity in the x-direction will be the same as the final velocity in the x-direction, while the starting and end velocities in the y-direction will be different because of acceleration due to gravity.3.) Make sure to define the coordinate axes and pay attention to the sign of the acceleration constant g.1.) Draw a diagram of the scenario- Make sure to label everything or Brian will be mad2.) List our known and unknown variables- Make a T-chart with an x and y column where you fill out the variables3.) Break the motion into horizontal and vertical components parallel to the x and y-axes- Motion in each dimension is independent of each other4.) Solve for the unknowns in two separate motions - one horizontal and one vertical.- Use the kinematic equations to solve. Usually, try to find time first because that will make everything easier. Time is the common variable between the x motion and y motion1.) List our known and unknown variables- make a t-chart with an x and y column where you fill out the variables2.) Break the motion into horizontal and vertical components parallel to the x and y-axes- Motion in each dimension is independent of each other3.) Solve for the unknowns in two separate motions - one horizontal and one vertical.- Use the kinematic equations to solve. Usually try to find time first because that will make everything easier. Time is the common variable between the x motion and y motion- Um just make sure to always find time first because that makes everything a lot easier. Usually, if you want to find time, the equation is D=Vit+(1/2)at- Also, you usually know the initial and final velocities for the x-axis, so write that in the T chart. They should both be the same, so that means acceleration is 0. If there are any other variables that are given, write them in the T chart. As for the y-axis, acceleration should be -9.8 m/s2. Again, time is the same for both x and y (unless it's some weird problem)- The final velocity for y, when it reaches the vertex, is 0 m/s^2No comments yet.
Cheatography n. The art of mapping complex subjects into clear, instantly navigable reference guides.