Linear Momentum
Projectile Motion
Vectors
Uncertainty
Homogeneity
100
What is the equation for momentum?
P=mv
100
When the variable g is portrayed in an equation, it usually represents gravity which is this number.
9.8 m/s2
100
This method of finding a resultant vector involves building a 4-sided figure using the two vectors as adjacent sides, then adding sides parallel to those two vectors, and finding the diagonal.
The Parallelogram Method
100
What is Accuracy?
Exactness of measurement
100
What makes an equation homogenous?
Base quantities/dimensions on the left equal to those on the right
200
What two formulas can be used to calculate impulse?
J = Ft
J = mv - mu
200
The variable Vx displays the _______ _______ along the x-axis
What is horizontal velocity?
200
These are the two components any 2-D vector can be resolved to.
Horizontal (x) and Vertical (y)
200
The length of a book is 23cm ± 1.0 . What is the book's percentage uncertainty?
4.3%
200
The dimensions of Power
[M1 L2 T-3 ]
300
During elastic collisions what two things are conserved?
Kinetic energy and Momentum
300
What is the value of a bodies velocity at maximum height?
zero
300
This is the horizontal component (Vx) of the vector below.
Vx = 8.66 m/s
300
What is the uncertainty formula when variables are being multiplied?
sum of the fractional uncertainties
400
What are the conservation of momentum equations for a body moving at an angle?
Total horizontal momentum before collision = total horizontal momentum after collision
Total vertical momentum before collision = total vertical momentum after collision
400
What is the equation used to calculate the vertical distance travelled by a projectile?
s = uyt - 1/2gt^2
400
These are the horizontal & vertical components of the vector below:
Vx = - 5.55 m
Vy = - 9.61 m
400
Jack is measuring his bedroom floor so he can install a carpet. He only has a 30 cm ruler measured in millimeters. He measured one side to be 276.0 cm. What is the uncertainty?
What is 0.5 cm?
500
A body of mass 2kg travels at a velocity of 5m/s at an angle of 30 degrees to the horizontal. What is it's vertical momentum?
5 kgm/s
500
A projectile is fired at an angle of 40 degrees to the horizontal with a velocity of 15 m/s. How long did the object take to get to maximum height?
0.98 seconds
500
What is the resultant horizontal component of the following vector?
zero
500
Z = 4 ± 0.01. What is the fractional uncertainty of Z3?
0.03/64