ball is dropped from rest at a height of 7.7meters above the ground.The ball falls freely and reaches the ground 3.5 seconds later. What is the average speed of the ball?
Why is this in the English section? @troyking32
the only place people help really is in the math section and this is a math question
7.7 meters per 3.5 seconds. Simplify that and you'll get 2.2 meters per second. You can do this by using a proportion, as such; \[\frac{ 7.7 }{ 3.5 } = \frac{ x }{ 1 }\] Basically what you're saying is, "The ball travels 7.7 meters in 3.5 seconds, and travels x meters in 1 second." Then it's just a matter of solving for x. Cross multiply ad you'll get 7.7 = 3.5x. Divide both sides by 3.5 and you'll get x = 2.2. Thus, the ball travels 2.2 meters per second, on average, during its entire trip.
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