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b) rate of distance covered in per unit time called average speed.
average speed = total distance/total time
4) distance = total path covered by object called distance. it is scaler quantity because it only specify magnitude of distance.
displacement. = the shortest distance between initial point to final point called displacement. it is a vector quantity because it specify magnitude of distance as well as direction
time = 15 minutes = 15×60 = 90seconds
speed 2m/s
Explanation:
distance = speed×time
2×90
180m
I hope you will be satisfied
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