PS 11.2 Formative

​​According to the text, ​​ (a)   is computed for the entire duration of a trip, and ​ (b)   is measured at a particular instant.

• average speed
• instantaneous velocity
• displacement

The ratio of distance to an object moves to the amount of time an object moves.

• speed

• displacement

• time

• distance

Tags

NGSS.MS-PS3-1

A person jogs 4 km in 32 minutes, then 2 km in 22 minutes, and finally 1 km in 16 minutes. What is the jogger's average speed in km/hr.

• 0.1 km/hr

• 1.0 km/hr

• 10.0 km/hr

• 0.7 km/hr

A train travels 190 km in 3 hr, then 120 km in 2 hr. What is its average speed?

• 62 km/hr

• 63.3 km/hr

• 60 km/hr

• 51.6 km/hr

The slope of a distance/time graph tells you (a)   .

(a)   is a description of both speed and direction of motion.

Since velocity describes both speed and direction, it is called a (a)   .

In the graph shown, what is the total distance the object traveled in 60 s?

• 60 m

• 200 m

• 3.33 m

• 100 m

In the graph shown, how far had the object traveled after 30 s?

• 30 m

• 200 m

• 60 m

• 100 m

Tags

NGSS.MS-PS3-1

In the graph shown, what is the speed of the object?

• 3.33 m/s

• 200 m/s

• 60 m/s

• 0.3 m/s

Tags

NGSS.MS-PS3-1