Question

use your test - taking strategies to

1. answer the question
2. identify which strategy was most useful in answering the question:

• read the question carefully.
• highlight key words.
• process of elimination
• use prior knowledge
• look for clues
• double check your work to ensure accuracy.

use the correct word to make the statement correct.
when the roller coaster car is at ____, it has less potential energy than it has at position 2.
choices: position 1; position 3; or position 4
a roller coaster ride

Explanation:

Step1: Recall potential energy formula

Potential energy $PE = mgh$ (where $m$ is mass, $g$ is gravitational - acceleration, and $h$ is height). Higher the height, more the potential energy.

Step2: Compare heights of positions

Position 1 is higher than Position 2. Position 3 and Position 4 are lower than Position 2.

Step3: Determine answer

Since potential energy is lower at lower - height positions compared to Position 2, the answer is either Position 3 or Position 4.

Answer:

Position 3; Position 4