Physical Science Final Review: Semester 2

Displacement vectors of 5 km south, 3 km north, 8 km south, and 8 km north combine to a total displacement of?

• 2 km south

• 2 km north

• 0 km

• 4 km south

If a track runner starts at the beginning of a race, runs his 800m race, and ends in the same spot he began, what is his displacement?

• 0 meters

• 800 meters

• 400 meters

• 1600 meters

Speed is defined as:

• The distance traveled per unit time

• The amount of force applied

• The change in direction of an object

• The energy possessed by an object

Tags

NGSS.MS-PS3-1

Define velocity:

• The rate of change of displacement with respect to time

• The total distance traveled divided by time

• The amount of matter in an object

• The force acting on an object

Tags

NGSS.MS-PS3-1

The difference between speed and velocity is:

• Speed is a scalar quantity, while velocity is a vector quantity.

• Speed and velocity are both vector quantities.

• Speed measures direction, while velocity does not.

• There is no difference between speed and velocity.

What is instantaneous speed? What can be used to measure instantaneous speed?

• Instantaneous speed is the speed at a particular moment and can be measured using a speedometer.

• Instantaneous speed is the average speed over a journey and can be measured using a stopwatch.

• Instantaneous speed is the total distance divided by total time and can be measured using a ruler.

• Instantaneous speed is the change in velocity over time and can be measured using a thermometer.

The SI unit for speed is:

• meter per second (m/s)

• kilometer per hour (km/h)

• mile per hour (mph)

• foot per second (ft/s)

Tags

NGSS.HS-PS4-1

Define acceleration:

• The rate of change of velocity

• The distance covered per unit time

• The force applied on an object

• The mass of an object

The slope of a speed–time graph indicates what?

• Acceleration

• Distance

• Speed

• Time

What is graph A displaying? Graph B?

• Graph A displays temperature change; Graph B displays rainfall.

• Graph A displays population growth; Graph B displays temperature change.

• Graph A displays rainfall; Graph B displays population growth.

• Graph A displays temperature change; Graph B displays population growth.