Lixin takes 6.8 minutes to walk from her home to the shopping mall 628 m away. Write down a calculation you could do mentally to estimate the average speed for her journey in m/s.
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The average speed at which Lixin is walking to the mall is 5.54 km/h
Step-by-step explanation:
Distance of the mall from Lixin’s house = 628 m = 628/1000 = 0.628 km
Time taken by Lixin to cover this distance = 6.8 mins = 6.8 / 60 = 0.1133 h
Thus, the speed at which Lixin is walking, speed = distance / time
= 0.628 / 0.1133
= 5.54 km / h
Thus, Lixin is walking from her house to the mall at a speed of 5.54 km/h
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