Motion (6-10)

A car traveled 88 km in 1 hour, 90 km in the next 2 hours, and then 76 km in 1 hour before reaching its destination. What was the car’s average speed?

• 254 km/h

• 63.5 km/h

• 209 km/h

• 74.5 km/h

A horizontal line on a distance-time graph means the object is

• moving at a constant speed.

• moving faster.

• slowing down.

• at rest.

A distance-time graph indicates that an object moves 100 m in 4 s and then remains at rest for 1 s. What is the average speed of the object?

• 50 m/s

• 25 m/s

• 20 m/s

• 100 m/s

Vector addition is used when motion involves

• more than one direction

• more than one velocity.

• more than one speed.

• all of the above

Tags

NGSS.HS-PS2-2

Which example identifies a change in motion that produces acceleration?

• a speed skater moving at a constant speed on a straight track

• a ball moving at a constant speed around a circular track

• a particle moving in a vacuum at constant velocity

• a vehicle moving down the street at a steady speed

Tags

NGSS.HS-PS2-1