October
Two fundamental causes of friction.
attraction and repulsion.
The main directions of the compass are called.
cardinal points.
North, South, East, West are...
the main cardinal points.
The amount of work done by a machine.
output force.
What is the rate of doing work (or work per time)?
power.
Mass, speed and distance are examples of ...
scalar quantities.
When a car slows down, it experiences negative acceleration also called?
deceleration
Daily life examples where vectors are useful...
sports and weather forecast (hurricanes, etc)
Power is measured in units called
Watts
Food has stored...
potential (chemical ) energy.
Any change in velocity per time is...
acceleration
A measure of how quickly an object moves, is the distance traveled per unit time or ...
speed
Acceleration occurs when an object is ...
1.speeding up.
2. slowing down.
3.changing direction.
When a flashlight is "off", it is..
potential energy stored within the battery.
Total energy of the particles in an object, when it increases the object becomes warmer
thermal energy.
It can be important to know the velocity of a hurricane, not just the speed, because...
velocity also tells direction.
The resistance arising to an object’s motion through a fluid or across a surface is called
friction
An example of gravitational potential energy is the energy of
any object at height.
When a "Rayados or Tigres" soccer player "kicks" the ball, there is ...
kinetic energy.
The sun is a source of...
light (or sometimes referred as radiant energy)
The 3 laws of Motion were proposed by
Isaac Newton.
Vectors and be represented with...
with a magnitude and an arrow indicating the direction.
The amount of work done on a machine...
input force
Kinetic energy with the formula KE=1/2mv2, involves....
the mass and velocity of the object.
A machine made from two or more simple machines.
compound machine.