A ball is dropped from a height of 10 m. Each time itstrikes the ground it bounces vertically to a height thatis 34 of the preceding height. Find the total distance theball will travel if it is assumed to bounce infinitely often
Question
A ball is dropped from a height of 10 m. Each time itstrikes the ground it bounces vertically to a height thatis 34 of the preceding height. Find the total distance theball will travel if it is assumed to bounce infinitely often
Solution
Sure, let's solve the problem step by step.
Step 1: Determine the first bounce height. Given that the ball is dropped from a height of 10 m, the first bounce height can be calculated by multiplying the preceding height (10 m) by 3/4 (34/100). First bounce height = 10 m * (3/4) = 7.5 m
Step 2: Calculate the distance traveled during the first fall and bounce. The distance traveled during the first fall is equal to the initial height, which is 10 m. The distance traveled during the first bounce is equal to twice the first bounce height, as the ball travels up and down. Distance traveled during the first bounce = 2 * 7.5 m = 15 m
Step 3: Calculate the total distance traveled during the first fall and bounce. The total distance traveled during the first fall and bounce is the sum of the distance traveled during the fall and the distance traveled during the bounce. Total distance traveled during the first fall and bounce = 10 m + 15 m = 25 m
Step 4: Calculate the total distance traveled during subsequent falls and bounces. For each subsequent fall and bounce, the distance traveled during the fall remains the same (10 m), and the distance traveled during the bounce is calculated by multiplying the preceding bounce height by 3/4 (34/100). Total distance traveled during subsequent falls and bounces = 10 m + (previous bounce height * 3/4)
Step 5: Calculate the total distance traveled by summing the distances from all falls and bounces. Since the ball is assumed to bounce infinitely often, we can calculate the total distance traveled by summing the distances from all falls and bounces. Total distance traveled = 25 m + (7.5 m * 3/4) + (previous bounce height * 3/4) + (previous bounce height * 3/4) + ...
This infinite series can be represented as: Total distance traveled = 25 m + (7.5 m * 3/4) + (7.5 m * 3/4) + (7.5 m * 3/4) + ...
To find the sum of this infinite series, we can use the formula for the sum of an infinite geometric series: Sum = a / (1 - r)
In this case, the first term (a) is 25 m, and the common ratio (r) is 3/4.
Using the formula, we can calculate the total distance traveled by substituting the values: Total distance traveled = 25 m / (1 - 3/4)
Simplifying the expression: Total distance traveled = 25 m / (1/4)
Dividing by a fraction is the same as multiplying by its reciprocal: Total distance traveled = 25 m * (4/1)
Calculating the product: Total distance traveled = 100 m
Therefore, the total distance the ball will travel if it is assumed to bounce infinitely often is 100 meters.
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