Question

dina walks 400 meters from her house to a convenience store in 5 minutes. what is her average speed?

Answer 1

Answer:

her average speed =

80 m / min or 1.33 m / s

Explanation:

average speed = total distance/ total time

= 400 m / 5min = 80m/min

= 400m/5min

= 400 m / 5×60 s

= 400 m/300 s

= 1.33 /s

hope it helps.

Answer 2

The average speed of Dina is 1.33 m/sec

Given:

Dina walks 400 meters from her house to a convenience store in 5 minutes.  

To find:

What is her average speed?  

Solution:

Formula used:

Average speed = Distance traveled / Time taken  

From the data, Dina walks 400 meters  

The time taken by Dina to reach the store is 5 minutes    

Since the units of distance are in meters convert minutes into seconds

=> 5 minutes = 5 × 60 seconds = 300 seconds

[ Since 1 minute = 60 seconds ]

Using the formula,

Average speed of the Dina = 400/300

= 4/3 = 1.33 m/s  

Therefore,

The average speed of Dina is 1.33 m/sec

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