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vova2212 [387]
3 years ago
11

A flea walking along a ruler moves from the 45 cm mark to the 27 cm mark. It does this in 3 seconds. What is the speed? What is

the velocity?
(Define increasing numbers to be the positive direction and decreasing numbers to be the negative direction.)
Physics
1 answer:
ad-work [718]3 years ago
3 0

Answer:

Explanation:

In the calculation of distance we do not take into account the direction of movement .So only magnitude of movement is taken care of.

On the other hand , in respect of displacement , we take into account even direction of movement along with magnitude.

Distance covered by flea = 45 - 27 = 18 cm

Displacement by flea = 27 - 45 = - 18 cm

Speed = Distance covered / time

= 18 / 3 = 6 cm / s

Velocity = - 18 / 3 = - 6 cm /s.

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The heating system in Jeff and Tony's new home takes cool air and passes it through the heat source using a fan or blower. What
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8 0
1 year ago
What type of energy is thermal energy?
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Why might exposing astronauts to weightlessness be harmful?
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