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As shown in the figure below, Greta walks 30m toward her truck. She notices she forgot her
coffee and returns back to the house. Her total travel time is 240 seconds.
30 m
30 in
What is Greta's average velocity over the 240s period?
m/s
What is Greta's average speed over the 240s period?
m/s

Respuesta :

samuelonum1

Explanation:

step one:

Given data

distance= 30 m

total distance to and fro (house and truck)= 60m

time taken to cover the distance of 30m= 240s

step two:

1. Greta's average velocity over the 240s period?

average velocity= displacement/time

average velocity= 30/240

average velocity= 0.125m/s

step three:

2. Greta's average speed over the 240s period?

average speed= total distance/total time

average speed= 30+30/240

average speed= 60/240

average speed=  0.25m/.s

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