Force and Motion SC 5th grade

Ball B" is moving towards the rectangular block. Which feature of the block can explain why this is happening?

• the block is blowing air towards "Ball B"
• the block is a magnet (and "Ball B" is made of a magnetic material)
• the block is located on the highest part of the surface
• the block is heavier than "Ball B"

"Ball A" was dropped from a higher elevation. Which of the following forces is responsible for it falling downward?

• friction
• gravity
• magnetism
• electricity

Based on the above graph, which of the following predictions could be made?

• Swimmer 1 is faster than the average swimmer.
• Swimmer 2 would be better in long-distance races.
• It would take twice as long for Swimmer 2 to swim 100 meters than Swimmer 1.
• Swimmer 2 is not able to swim 100 meters.

The graph above shows a race between Swimmer 1 and Swimmer 2. In the end, Swimmer 2 was the winner. Which of the following could explain this result?

• The race was for only 50 meters.
• Swimmer 1 was heading in the wrong direction.
• There were other competitors in the race.
• Swimmer 2 was moving faster than Swimmer 1

“Ball C" is rolling across the surface, but it eventually comes to a stop. Which force is most likely responsible for this?

• gravity
• friction
• electricity
• magnetism

If Block B and Block D are the same mass, which of the following describes how they would move when exposed to the forces above?

• Both blocks would move in the same direction, but at different speeds.
• Both blocks would stay still.
• Both blocks would move in the same direction and at the same speed.
• Both blocks would move at the same speed, but in different directions.

Which of the blocks shown above would not move when exposed to the forces above?

• Block A
• Block B
• Block C
• Block D

If all of the above blocks are the same mass, which of the following would slide across the surface the fastest as a result of the forces acting on it?

• Block A
• Block B
• Block C
• Block D

A graph like the one above might be useful when trying to decide what?

• the best material to use when constructing a new road (gravel, asphalt, concrete, etc.)
• the proper width to build a road and keep traffic flowing smoothly
• the fastest way to drive from one part of town to another
• the safest height to build a bridge crossing over a river

An identical object was placed onto the three different surfaces and set into motion with an identical force. The bars show how far it took the object to travel 10 meters. Based on the graph, which surface had the greatest friction?

• surface A
• Surface B
• Surface C
• Friction is the same on every surface