When dealing with two dimensional motion, you can decompose all vectors into horizontal and vertical and deal with each one separately.
Let's review the equations we have seen so far.
this equation tells you that velocity v is
in 1D, a question using this equation might look like this - Hannah starts her sprint at 10m left of the door and ends her spring after 5 seconds 15m right of the door. Assume 0 acceleration, Find Hannah's velocity and show her position and velocity on the position-time graph and her velocity vs time graph in your "show your work"
I'm stepping you through that one just to make sure - The initial position is -10 (because it is to the left of the door, it is negative). and the final position is 15, which is positive because it is to the right of the door. If I want to find the distance between them, I would subtract .
what does finding the displacement look like in 2D? Saw you start at
show the vector addition in the graph below, and give the displacement in vector form. you can use \hat to prompt the calculator to let you write it as a vector
give a scenario where you would want to add the two vectors above instead of subtract them?
Watch the following video
do you have any questions?
Let's use it! How far has our ball traveled when its velocity in the y direction becomes 0? It is thrown up at a velocity of 4 m/s. use
projectile motion also works with frames of reference. A clown in a glass train throws a ball straight into the air. compare how the motion looks to the clown vs to the man on the platform watching the train go by.
how would the motion change to the platform viewer compared to the train viewer if there are two clowns throwing balls to each other as the train passes by?
drag the descriptions of motion to the proper place
when the velocity in the y direction is 0
a point where my y velocity is negative
a point where my y velocity is positive
when the y position is 0
initial x and y direction, and where the initial velocities in the x and y directions would be measured.
Consider the following question - a cannon is shot with an initial velocity of
Consider the following question - a cannon is shot with an initial velocity of 2
consider the following problem: the hangtime of a basketball player who jumps a vertical distance of 2 feet (0.6 m) is about 2/3 s. what will be the hangtime of a player that can jump 1.4 feet (1.2 m) horizontally?
A cannonball is fired and you are given the following information
Initial velocity =
total horizontal distance when it hits the ground = 7 m
acceleration due to gravity = 10 m/s^2
acceleration in the x direction = 0
you are asked how far off the ground the cannonball is fired from.
You may have to use a couple different equations for this one. talk through what you would do, don't actually do it.
How are you feeling about each of these
how to determine what your givens are
how to determine what your unknown is
how to figure out which equation to use
how to use the equations
whether or add or subtract vectors
Using two equations to solve one problem
I've got this
I'm fuzzy
so confused