A rolling ball moves from 8.4 cm to 4.2 cm during the time from 3.0 s to 6.1 s. What is its average velocity over this time interval?

The average velocity of the ball is 1.355 cm/s.

Explanation:

Given;

initial displacement of the ball, x₁ = 8.4 cm

final displacement of the ball, x₂ = 4.2 cm

initial time, t₁ = 3.0 s

final time, t₂ = 6.1 s

The average velocity of the ball is calculated as;

Therefore, the average velocity of the ball is 1.355 cm/s.

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

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