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100

The force that pulls objects with mass toward one another or the ground. 

What is gravitational force?

100

Measures the change in speed, velocity, or direction over time.

What is acceleration? 

100

What is the difference between speed and velocity?

Velocity is different than speed because it includes a direction. Speed is a distance traveled in a certain amount of time and velocity is a distance traveled in a certain amount of time in a specific direction.

100

Top of the highest hill

What is the maximum potential energy and lowest amount of kinetic energy?

200

The force of gravity is 9.8 meters/second^2.

What is the equation for gravitational force?

200

The force that resists the motion of an object and is caused by the rubbing of two close surfaces. 

What is friction?

200

What is the relationship between velocity and acceleration?

Acceleration is a change in velocity over time, so acceleration includes velocity. 

200
At the bottom of the highest hill/drop

What is the maximum kinetic energy and the lowest potential energy?

300

A measure of how fast something moves. 

What is speed?

300

stored energy due to an object's mass, height, or gravity. 

What is potential energy?

300

How are inertia, force, and motion related?

Inertia, force, and motion are related because changes in motion are caused by forces. The motion of an object tends to remain unchanged due to its inertia, or the tendency to resist a change in motion.

300

The kinetic energy of the cart would increase with three people because as the mass increases, the kinetic energy increases. 

How does mass effect kinetic energy?

400
Measured as distance/time (25 miles per hour).

What is the equation for speed?

400

energy due to an object's motion. This energy depends on an object's mass and velocity.

What is kinetic energy?

400

What are the roles of gravity and friction in a roller coaster ride?

Gravity is the force that is responsible for the downward motion of the car. Fiction is the force that is responsible for the cars stopping motion. The brakes rub against the track and the friction causes the car to slow down.

400

1/2* mass* velocity^2

What is the equation for kinetic energy?

500

The distance traveled in a particular direction divided by the amount of time. It measures an object's speed and direction. (25 miles per hour North). 

Direction can include: North, south, east, west, up, down, left, right, forward, backward. 

What is velocity? 

500
The amount of matter in an object. It affects both potential and kinetic energy. 

What is mass?

500

What are the two types of friction that are present in a roller coaster?

Constant friction and air friction are the two types of friction present in a roller coaster. Contact friction occurs when the wheels roll on the track or the brakes slow down the coaster. Air friction or air resistance is caused when the coaster moves against the air.