Energy
Forces
Motion 1
Motion 2
Miscellaneous
100
At what point on the roller coaster is the maximum kinetic energy reached?
At its lowest point
100
Which two factors determine gravitational attraction between two objects?
Mass and distance apart
100
The force of attraction that exists between all objects is ____?
Gravity
100
What is the formula to calculate speed?
Speed = distance/time
100
If you drop a penny from the top of a building and it reaches terminal velocity, what has happened?
The force of gravity and air resistance are balanced
200
Potential energy that depends on height is called ____?
Gravitational potential energy
200
A teacher pushes against the wall with a force off 5N. The wall does not move. What is the amount of force exerted by the wall on the teacher?
5N
200
What is all motion described in relation to?
Reference point
200
What is the difference between speed and velocity?
Velocity is speed with direction
200
Mass and momentum are related. If we have more mass, we have _________momentum
more
300
When is the maximum potential energy of a roller coaster car reached?
At its highest point
300
Are the forces on a car that is turning the corner balanced or unbalanced?
Unbalanced
300
The force that works against forward motion is _____?
Friction
300
A biker rides 60 miles in 3 hours. What is the bikers speed?
Speed = 20 mi/hr
300
True or false Energy cannot be created or destroyed
true
400
Identify the energy transformations that occur while a roller coaster car goes from the highest point toward the lowest point
Gravitational potential energy (at top) changes to kinetic energy (at bottom). While its moving downward it has both PE and KE
400
When forces acting opposite each other are equal, they are considered _____.
Balanced
400
Which law of Newton's describes how an unbalanced force must be applied to an object to change it motion?
1st law - Law of Inertia
400
What type of line on a distance/time graph describes an object at rest?
A horizontal straight line
400
If you pull on a wagon, but it's not moving yet, which force of friction is opposing your pull?
Static friction
500
A swimmer swimming during a race is an example of kinetic energy or potential energy?
Kinetic energy
500
What will happen if there is an unbalanced force during an arm wrestling match?
Both arms will move in the direction of the larger force.
500
A car travels 200 miles in 4 hours. What is its speed?
Speed equals 50 mi/hr
500
On a distance/time graph, how do you indicate moving away from the starting point?
A diagonal straight line upwards
500
The downward force of gravity is a measure of _____.
Weight
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