06-04-2017
Mathematics

contestada

A golf ball is hit into the air. The path of the ball can be described by the equation h equals 70t - 5 t squared where H is the height of the ball in meters and T is the time in seconds. When will the ball hit the ground?

Respuesta :

06-04-2017

We want to know when h is equal to 0. This represents when the height is 0 and thus, hits the ground.

Then, 0 = 70t - 5t²
0 = 5t² - 70t
0 = 5t(t - 14)
t = 0 and 14.

So, at t = 0, the initial height is 0 and it hits the ground again after 14 seconds.

Answer Link

Otras preguntas

Claudia read 10 chapters in 6 hours.If she continued to read at the same rate how many chapters would she have read in 2 days?

An undamped 1.48 kg horizontal spring oscillator has a spring constant of 35.4 N/m. While oscillating, it is found to have a speed of 3.90 m/s as it passes thro

1 5 y + 8 − 4 5 = 9 10 y − 9 20

If a cell is simultaneously starved for most amino acids, including tryptophan, this general starvation affects the trp operon in an unique way. Because the rib

A third conditional KO mouse is generated, this time knocking out the activity of lactate dehydrogenase in skeletal muscles. The WT and KO mouse are subjected t

Dima weighs 129 pounds. How many kilograms does she weigh? Use the conversion table to find the answer. Round to the nearest hundredth. Units of Weight Customar

The direct write-off method of accounting for bad debts uses an allowance account. uses a contra asset account. is the preferred method under generally accepted

HURRY I NEED A RIGHT ANSWER PLEASE

Create a table in your own database using the following statement. CREATE TABLE DateRange (DateID INT IDENTITY, DateValue DATE, DayOfWeek SMALLINT, Week SM

In many people, the ingestion of ethanol produces a dose-dependent leakage of interstitial fluid from the intestinal wall into the lumen of the intestine, givin