3.1 Vectors and Scalars
A vector needs both __________________ & __________________ for a full description.
We draw vectors as ___________.
The combined effect of two or more vectors is called the __________________.
The resultant of these two vectors looks like:
3.2 & 3.3 Components of Vectors
Two vectors at __________
angles to each other that can take the place of
a resultant vector are called __________________ ___________.
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What do the two components of this velocity vector look like? |
If the magnitude of the above vector is 20. m/s, and the angle between the vector and the horizontal is 35°, how long are the components?
To find components you can use the formulas:
x-component = ________________ ____________ x ________ ____
y-component = ________________ ____________ x ________ ____
Note: These formulas only work if the angle is measured between the ___________ and the ____________________.
How much does Jimmy weigh? (Hint: He’s in equilibrium right now.)
To find resultant, we add them ________ _____ ________.
A force is a ________ or a ________.
Forces can be measured in ____________ or ______________.
About how much force does it take to turn off a light switch?
1 Newton ≈ __________ pounds.
If one person moves to the side, like below, what is the net force?
3.4 Projectile Motion
Anything thrown or fired is a ____________________.
A projectile cannot be ________ - __________________.
Horizontally, a projectile moves with ________________ ______________.
Vertically, a projectile _____________________ because of ______________.
Ideally, the shape of a
cannonball’s path is a _______________ (if you can neglect ______
____________________). Really, the shape of a
cannonball’s path is a c_____-s_________ parabola.
________________________ launch angles give the same range.
An object that is projected so fast it falls around the earth (aka ____________ the earth) is called a __________________.
What is this ball’s acceleration?
How long does it take the ball to get to the top?
How long does it take to come back down?
How fast is it going when it comes back down?
Which object will hit the ground first?
Draw in x and y velocity components.
Draw in x and y velocity components.
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If a mouse is walking down a board at 6.0 cm/s, and the river is flowing at 19 cm/s, what is the mouse’s velocity relative to the Earth? |
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