Forces
Force is described by both ___________ and _________
What is push and pull
Energy is divided into what two categories?
What is potential and kinetic energy
An object in motion will stay in motion and an object at rest will stay at rest until acted upon by an unbalanced force.
What is Newton's 1st Law
A car travels 80 km in 2 hours. Calculate its average speed
What is 40km/h
Friction occurs because the surface on any object is _________
What is rough
The overall force on an object after all the forces are added together is called the
What is Net Force
Energy can not be destroyed but it can be ________ and ____________
What is stored and transferred
2 ways to increase the acceleration of an object.
What is decrease the mass and increase the force
A person walks 15 km in 2 hours. Calculate his average speed
7.5km/h
What is opposite
When the forces on an object are ____________, the motion of the object does not change
What is balanced
The more mass an object has, the ________ potential energy it has
What is more
For every action, there is an opposite and equal reaction
What is Newton's 3rd Law
How much time will it take for a bug to travel 25 meters across the floor if it is traveling at 5 m/s
What is 5 sec
Types of friction on objects
What is fluid, rolling, static, and sliding
The greater the mass of an object, the more __________ is needed to change its motion
What is force
A rock at the top of a mountain top is an example of what type of energy?
What is potential energy
Newton's 2nd Law says what?
What is F=ma
It took 4 hours for a train to travel the distance between two cities at a speed of 120 km/hr. How many km between the two cities
What is 480km
Pushing an object across a surface
What is sliding friction
Draw a picture showing a net force of 10 N to the right
Show Mr B
When stored energy begins to move, the object now ___________ from potential energy into kinetic energy
What is transfers
The tendency of an object to remain at rest or in motion in a straight line unless an external force acts upon it. Also known as Newton's 1st Law
What is Inertia
How far can you get away from your little brother with the squirt gun filled with paint if you can travel at 3 m/s and you have 15s before he sees you
What is 45m
You can increase the force of friction by
What is making the surface rougher