Understanding Motion and Speed

Marco walks by the teacher’s desk. The desk was in front of Marco and is now behind him. What changed?

• The desk’s direction

• Marco’s direction

• The desk’s position

• Marco’s position

Which is a true statement about motion?

• An object in motion always changes its mass

• An object in motion will never change its direction

• An object in motion always changes position and can change direction

• An object in motion will never change its position

Angel pushed a ball so that it rolled across a table. What changes to the ball will occur once it falls off of the table?

• Only the position of the ball

• Only the direction of the ball

• Neither the position nor direction of the ball

• Both the direction and position of the ball

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-5

Which of the following statements describes an object in motion?

• A lamp sitting on a table

• A book resting on a shelf

• A pencil lying on the desk

• A coin dropping to the floor

Kevin was flying from Florida to Tennessee in an airplane. Which answer BEST describes the plane’s motion as it follows its route?

• The plane will change position

• The plane will change direction

• The plane will change mass

• Both A and B are correct

Neal was trying to determine how fast his new remote-controlled airplane was traveling. Which two things must he know to measure the speed of his airplane?

• gravity and motion

• position and motion

• distance and time

• mass and weight

Darren and Nick walk to school from different neighborhoods. One morning, they both left home at exactly the same time. Darren gets to school first and tells Nick that he was first because he is a faster walker. Nick disagrees. What do they need to know to find out which boy walked at a greater speed?

• The distance and direction each boy walked.

• The mass of each boy and the weight of each boy’s backpack

• The distance each boy walked and the time it took each boy to walk

• The time it took each boy to walk and the direction each boy walked

Susan designed an experiment to determine the speed of a toy car. She released the car from the top of a ramp. She already has a meter stick. Which other tool should she use to measure the car’s speed?

• balance

• funnel

• spring scale

• stopwatch

Emily and her mom are in the car headed to the grocery store. The grocery store is 3.2 miles from their home. For Emily to determine the speed of the car, what other information will she need?

• The volume of the car while in motion

• How long it took them to get to the store

• How many times they took the same route

• The mass of the car, Emily, and her mom

Two objects moved the same distance. In order to determine which object moved faster, what additional information is needed?

• Which of the two objects has more mass.

• Which object covered the distance in less time.

• The strength of the forces that moved the objects.

• If either of the objects used wheels to move.

Tags

NGSS.MS-PS3-1