Question

use your test - taking strategies to

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

• understand 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.

the figures show a launcher that propels a marble horizontally toward a wooden block that is hanging at rest from a string (time 1). when the marble collides with the block (time 2), the marble stops and falls to the table while the block swings up to a certain height and then stops for an instant (time 3).
what two statements, when used together, make the best argument to support the claim that kinetic energy from the marble was transferred to the block?

• the marble fell to the table.
• the block swung upward from rest.
• the marble was propelled from the launcher.
• the marble stopped after colliding with the block.
• the block stopped after it reached a maximum height.

Explanation:

Step1: Understand kinetic - energy transfer concept

Kinetic energy transfer occurs when a moving object (marble) collides with a stationary object (block) and the stationary object starts moving.

Step2: Analyze each statement

The marble falling to the table is not related to energy transfer to the block. The marble being propelled from the launcher is about its initial motion, not transfer. The block stopping after reaching maximum height is about its final state, not transfer. But the block swinging upward from rest shows it gains kinetic energy from the marble, and the marble stopping after colliding with the block shows it loses kinetic energy which is transferred to the block.

Answer:

The block swung upward from rest; The marble stopped after colliding with the block.