Manic Momentum
The units for momentum
kilograms, meters, seconds
Newton’s first law
When there is no net force acting on an object, the object will, remain at rest, or move with a constant velocity in a straight line.
Units for work
Joules(J)
How to add or subtract sig figs.
sum(or difference) can only be as precise as the least precise measurement
3 ways to accelerate
what are, speed up, slow down, and change direction?
Formula for finding momentum
p=m(v)
Units of Force.
Newtons
Equation to find work.
W=Fd
Example- convert 1 mile into inches.
63360 inches
The equation for velocity
what is delta v = d/t
The change in momentum can be identified as?
delta p
Acceleration due to gravity. (Numerical value)
9.81 m/s ^2
Formula for kinetic energy.
KE=1/2 mv^2
Base units for (SI)
meter, kilogram, liter
units for velocity
what are m/s
Two types of collision?
Elastic, inelastic
ENewton’s third law
Every action or force is accompanied by an equal and opposite reaction or force
Two types of Potential energy.
Gravitational potential Energy and Elastic potential energy.
*example*convert 84.5 micrometers to kilometers.
8.45^10-8 km
formulas for 2d motion
vsubf=vsubi+a(t)
d=vsubi(t)+1/2a(t)^2
vsubf^2=vsubi^2=2ad
*Example*Car A has a mass of 5kg and is traveling at 5m/s along a frictionless horizontal surface when it collides with car B. Car B was initially at rest and has a mass of 10kg. Upon colliding, the cars lock together. Determine the velocity of the car after the collision.
2 m/s
*Example*A 5kg crate is pulled across the floor with a horizontal force of 15N at constant velocity. Determine the force due to friction.
15N
Internal energy or heat energy is represented as?
Q
recreate the prefix chart.
pico. p. 10^-12
nano. n 10^-9
micro. (mnu). 10^-6
milli. m. 10^-3
centi. c. 10^-2
base. 10^0
kilo. K 10^3
mega. M 10^6
giga. G 10^9
tera. T 10^12
*EXAMPLE* A rock is thrown horizontally off a cliff with an initial velocity of 15.0 m/s. The rock takes 4.0 seconds to strike the ground, How high is the cliff?
78.5 m