Ch 11 Quiz

A person walks 1 mile every day for exercise. On Tuesday, she left her front door at 9:00am and returned to the house at 9:22am. What was the total DISPLACEMENT of her walk?

• 1 mile

• 2 miles

• 0 miles

• 22 minutes

Instantaneous speed is measured

• at the starting point

• when the object stops

• at a particular instant

• over the entire duration of the trip

A car traveled 60 km in 1 hour, 68 km in the next 2 hours, and 72 km in the last hour before reaching its destination. What was the car's average speed?

• 200 km/hr

• 60 km/hr

• 50 km/hr

• 800 km/hr

The slope of a line on a distance-time graph is

• distance

• acceleration

• speed

• displacement

A horizontal line on a distance-time (position-time) graph means

• the object is moving at a constant speed

• the object is speeding up

• the object is slowing down

• the object is not moving

Tags

NGSS.MS-PS3-1

The rate at which velocity changes is called

• acceleration

• speed

• motion

• displacement

Which example identifies an object that is accelerating?

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

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

• an object that is not moving

• a vehicle moving down a straight street at a constant speed

Objects in free fall near Earth's surface experience

• constant speed

• constant velocity

• constant acceleration

• no gravity

Tags

NGSS.MS-PS2-4

An object that is accelerating may be

• slowing down

• speeding up

• changing direction

• slowing down, speeding up, or changing direction

The direction and length of a straight line from the starting point to the ending point of an object's motion is called

• distance

• velocity

• displacement

• acceleration