Definitions
It is the word that describes how far an object is. It is represented by the unit meter.
A rock falls from the cliff. What change in velocity is happening?
change in speed
Define force
A push or a pull
What quantity is speed?
scalar
The rate at which an object moved a distance per unit of time.
speed
List the two different things that might change when acceleration occurs
Speed and direction
Combination of all forces on an object
net force
Give one type of speed..
average; instantaneous; Constant
It is the speed and direction of an object. It is measured in m/s + direction.
velocity
The unit for acceleration.
m/s2
How can we reduce friction?
use lubricants
give a type of friction..
rolling, sliding, static, fluid
How will you solve an object moving in two dimensions?
use Pythagorean theorem
What is the formula for acceleration?
vf - vi/ t
When forces are unequal...
unbalanced
What is the distance a toy car can go at 50 m/s in 5s?
250 meters
A person is walking around a circular 100 meter park. They begin at a certain point on the path and walk the entire way around the circle, eventually returning to the exact point where they started. What are the values of distance and displacement?
0 displacement
distance 100m
What is the acceleration of a car going from 2 m/s to 22 m/s in 5s
4 m/s2
What is the net force for balanced forces?
zero
What is the time it would take to drive 300mi at 50 mi/h
6 h