Motion and Speed

Cars, bicycles, and people can all be objects in motion. What is motion?

• a device used for measuring mass

• a measure of the force of gravity on an object

• a natural force that is produced by a magnetic field

• a change in the position of something over time in comparison to a reference point

Tags

NGSS.MS-PS2-2

To make sure your measurements are clear, it is important to use appropriate units. Which of these is a unit of distance?

• gram

• kilometer

• liter

• second

To make sure your measurements are clear, it is important to use appropriate units. Which of these is a unit of time?

• kilogram

• meter

• milliliter

• minute

To make sure your measurements are clear, it is important to use appropriate units. Which of these is a unit of speed?

• seconds per gram (sec/g)

• meters per second (m/sec)

• grams per milliliter (g/mL)

• milliliters per second (mL/sec)

Tags

NGSS.MS-PS3-1

Mr. Scott walked for 3 hr at a speed of 10 km/hr. How far did Mr. Scott walk?

• 3 km

• 10 km

• 30 km

• 300 km

The following line graph shows an object’s distance over time. What is happening to the object between points W and X?

• It is not moving.

• It is speeding up.

• It is slowing down.

• It has acceleration.

Tags

NGSS.MS-PS3-1

Three students are in a race. The students’ starting points and the finish line are shown in the following diagram.Which runner will win the race?

• Runner A will win the race.

• Runner B will win the race.

• Runner C will win the race.

• It will be a three-way tie

Hit a ball and you set it in motion. Pedal a bicycle and you set it in motion. Push a swing and you set it in motion. What must always be true of any object that is in motion?

• It is moving forward.

• It is changing its position.

  .

• It is changing its direction.

• It is moving at a constant speed

When you travel in a car, both you and the car are in motion. When you go to an amusement park, you can be in motion, too. The picture below shows an amusement park ride in motion. Which statement is true about the object in motion in the picture?

• The object is changing only its position.

• The object is changing only its direction.

• The object is changing both its position and direction.

• The object is changing neither its position nor direction.

Mrs. Jenkins asked four student volunteers in her science class to show that an object in motion can change both its position and its direction. Here is what the four students did. Who best showed that an object in motion can change both its position and direction?

• Erica

• Luis

• Michael

• Sharona

Tags

NGSS.3-PS2-1