akfroggyman7139 akfroggyman7139

07-01-2020
Physics

contestada

A ball is dropped from a height of 80m. The time, in seconds, it takes to reach the ground is:__________.

Respuesta :

Pharero Pharero

07-01-2020

Answer:

4.04 s

Explanation:

h = vi + 1/2 a t ^2

HERE h = 80 m , vi = 0 , a =9.81 m/s^2

80 = 0 + 1/2 × 9.81 × t ^2

80 = 4.905 t^2

t^2 = 80/4.905

t ^2 = 16.30988

t = square root of 16.30988

t = 4.0385 s

t = 4.04 s

Answer Link

Otras preguntas

6. When can you say that an object is accelerating? A. when the speed remains the same B. When the speed is changing C. when the instantaneous velocity is the s

What is a negative aspect of biomass energy? 1. It releases greenhouse gasses into the atmosphere. 2. It is not a renewable resource. 3. It cannot replenish its

Which of the following statements is true of these two cells? A. Nerve cells do not look like skin cells because they make up different organs and have differ

La cantidad de corriente se expresa en... A. Ohmios. B. Voltios. C. Amperios.

Susana went on a trip. She covered a total of 135.7 km without making any stops along the way. and it took her exactly 2 hours to drive at her destination. At w

Which of the following is the graph of y = |x – 1 – 4?

Energy in an ecosystem flows directly from _______. a. producers to tertiary consumers b. producers to secondary consumers c. tertiary consumers to secondary co

Fix the one word that is used incorrectly Radar is often used to track moving airplanes or storms, but it can also be used to locate stationery objects buried

Bus A travels according to the function y = 125/2x where y is distance traveled in miles and x is time in hours. Bus B travels according to the graph below, whe

Ava invests money in an account paying simple interest. She invests $130 and no money is added or removed from the investment. After one year, she has $132.60.