Units & Kinematics I.txt

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10^x, name x for each one of the following cases:
giga
kilo
nano
pico
mega
centi
micro
milli
- 9
- 3
- (-9)
- (-12)
- 6
- (-2)
- (-6)
- (-3)
(4x10^-10)(5x10¹⁴)=

20x10⁴=2x10⁵
Sin(0°)

0
Sin(30°)

1/2
Sin(45°)

√2/2
Sin(60°)

√3/2
Sin(90°)

1
Sin(180°)

0
Cos(0°)

1
Cos(30°)

√3/2
Cos(45°)

√2/2
Cos(60°)

1/2
Cos(90°)

0
Cos(180°)

-1
Log45=x means?

10^x=45
SOH-CAH-TOA
- Sin is Opposite over Hypotenuse
- Cos is Adjacent over Hypotenuse
- Tangent is Opposite over Adjacent
Kinematics is...

a branch of Newtonian mechanics that deals with the description of motion.
Give an example of a Kinematics problem describing motion in only one dimension

Dropping objects problem
Give an example of a Kinematics problem describing motion in two dimensions

Projectile motion problem
Define displacement.
Is it a scalar or vector quantity?
SI units

an object in motion experiencing a change in its position in space undergoes displacement.

It's a vector quantity, connecting in a straight line the objects initial and final positions.

m
Define velocity.
Scalar or vector?
SI units

Rate of change of displacement in a given unit of time.

Vector.

m/s
Define speed.
Scalar or vector?
SI units
- Rate of actual distance traveled in a given unit of time.
- Scalar.
- m/s
Define acceleration.
Scalar or vector?
SI units
- Rate of change of velocity over time.
- A~ results from application of force(s).
- Vector
- m/(s^2)
Newton's 2nd Law

F=ma
On MCAT when you see Force, think
- Acceleration
- And when you see Acceleration, think Force.
- MCAT limits kinematics problems to those involving motion with constant acceleration.
Define and name examples of linear motion problems.

What are directions of v and a in linear motion?
Motion along a line.

Along a line (both v and a)
- Examples:
- (1) motion along a vertical path
- (2) motion along a horizontal path
- (3) motion along an inclined surface or ramp
_{Summary of kinematics equation (5 of them)}

Δx=1/2*(v0+v)*t = v(bar)*t

v(bar) = 1/2*(v0+v)
Projectile motion is...
Give an example.

...motion that follows a path along two dimensions.

Two dimensions (usually horizontal and vertical) are independent of each other and must be analyzed separately.

E.g.: cannonballs (pushka, zarbazani), baseballs, bullets...

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Units & Kinematics I.txt

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Units and Kinematics I

Updated

2013-06-04T15:01:28Z