Ben and jerry went for a drive. they decided to stop for a snack and have some ice cream. how fast did they drive on their way to the store? a) 15 km/h b) 30 km/h c) 40 km/h d) 60 km/h

B)30 km/h

Explanation:

The speed of Ben and Jerry on their way to the store is given by

where

d is the distance they covered

t is the time they took

From the graph, we see that Ben and Jerry travelled for a distance of d=60 km in a time of t=2 h, so their speed is

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.  

conservation of mass

mass before something happens = mass afterwards