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2 years ago

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) A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, then 1.0 km west to retur

n to its starting point. This trip takes 45 min. a) What was the bear's average speed

1 answer:

andreev551 [17]2 years ago

6 0

Answer:

$v_{avg} = 5.33\ Km/h$

Explanation:

given,

motion of polar bear

1.0 km south ; 1.0 km east ; 1.0 km north ; 1.0 km west

total time of the trip = 45 min

$t = \dfrac{45}{60}\ hr$

t = 0.75 hr

total distance travel by bear = 1 + 1 + 1 + 1 = 4 km

average speed of the bear = ?

$average\ speed = \dfrac{total\ distance}{total\ time}$

$v_{avg} = \dfrac{4}{0.75}$

$v_{avg} = 5.33\ Km/h$

hence, the average speed of the car is equal to 5.33 Km/h

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