CCA 2 Science

Xavier is playing baseball and hits the baseball with his baseball bat. What is Xavier demonstrating?

• doing work by pushing the ball and changing its motion and position

• changing the position but not the motion of the ball

• doing work by pulling the baseball bat and changing the baseball's position but not motion

• changing the position and motion of the ball without doing work

The numbers represent 4 students standing on either side of a heavy box. If the students want to move the box northeast, how should they apply force?

• students 2 & 3 push, students 1 & 4 pull

• students 2 & 3 pull, students 1 & 4 push

• students 3 & 4 push, students 1 & 2 pull

• students 3 & 4 pull, students 1 & 2 push

The numbers represent 4 students standing on either side of a heavy box. If the students want to move the box southeast, how should they apply force?

• students 2 & 3 push, students 1 & 4 pull

• students 2 & 3 pull, students 1 & 4 push

• students 3 & 4 push, students 1 & 2 pull

• students 3 & 4 pull, students 1 & 2 push

All of these objects are moving in the direction of the pull of gravity EXCEPT–

• a roller coaster going down a steep hill

• a helium balloon rising into the sky

• rain and sleet falling from a cloud.

• a rock sinking in a tank of water.

A student rolled an iron ball down a ramp with a strong magnet near the bottom. Which of the arrows shows the path the ball will most likely follow?

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• magnetism

• electricity

• friction

• gravity

Which objects would move away from each other?

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What is the downward force that pulls objects to Earth

• magnetism

• air pressure

• electricity

• gravity

A pull can be used to do all of the following EXCEPT

• open a door

• move a wagon

• lift rocks

• boil water

Students rolled a ball down a straight, flat ramp and observed its motion. Which of the following shows the most likely path?

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