Match each word with its definition. 1. directional quantity
2. 30 m/s northwest, for example
3. total distance divided by total time
4. 30 m/s2, for example
5. 30 m/s, for example
6. 30 m, for example

Velocity
Speed
Acceleration
Average speed
Distance
Vector

The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.

Aphase diagram assumes is kept constant.