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3 years ago

HELP. what is the speed of a boat in miles per hour that travels 20 miles in 45 minutes?

1 answer:

6 0

Average speed = (distance covered) / (time to cover the distance)

= (20 miles) / (45 minutes)

Multiply that fraction by (60 minutes / 1 hour) .
This is equal to ' 1 ', so you won't change anything except the units.

= (20 miles / 45 minutes) times (60 minutes / 1 hour)

Multiply the fractions, then cancel 'minutes' out of
the numerator and denominator.

= (20 miles x 60) / (45 x 1 hour)

= (20 x 60 / 45) miles/hour

= 26-2/3 miles/hour .

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2 years ago

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2 years ago

A mass m = 1.1 kg hangs at the end of a vertical spring whose top end is fixed to the ceiling. The spring has spring constant k

adell [148]

Answer:

a) = 10.22 rad/s

b) = 0.35 m

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Given

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