Chapter 6: Q. 76 (page 698)

A girl drops a ball off a cliff into the ocean. The polynomial $- 16 t^{2} + 250$ gives the height of a ball t seconds after it is dropped from a 250-foot tall cliff. Find the height after $t = 2$ seconds.

Short Answer

Expert verified

The height of the ball after 2 seconds is 186 feet.

Step by step solution

Step 1. Given information.

The height of the ball after t seconds is:

$- 16 t^{2} + 250$

The given time is $t = 2$ seconds.

Step 2. Evaluate the expression for the given value.

Substitute $t = 2$ in the given expression.

localid="1656433186496" $\begin{array}{rcl} - 16 {(2)}^{2} + 250 & = & - 16 (4) + 250 \\ = & - 64 + 250 \\ = & 186 \end{array}$

Step 3. Conclusion.

The height of the ball after 2 seconds is 186 feet.

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A girl drops a ball off a cliff into the ocean. The polynomial $- 16 t^{2} + 250$ gives the height of a ball t seconds after it is dropped from a 250-foot tall cliff. Find the height after $t = 2$ seconds.

Short Answer

Step by step solution

Step 1. Given information.

Step 2. Evaluate the expression for the given value.

Step 3. Conclusion.

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A girl drops a ball off a cliff into the ocean. The polynomial −16t2+250gives the height of a ball t seconds after it is dropped from a 250-foot tall cliff. Find the height aftert=2 seconds.

Short Answer

Step by step solution

Step 1. Given information.

Step 2. Evaluate the expression for the given value.

Step 3. Conclusion.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Mechanics Maths

Pure Maths

Logic and Functions

Probability and Statistics

Statistics

Decision Maths

Study anywhere. Anytime. Across all devices.

A girl drops a ball off a cliff into the ocean. The polynomial $- 16 t^{2} + 250$ gives the height of a ball t seconds after it is dropped from a 250-foot tall cliff. Find the height after $t = 2$ seconds.