14-01-2020
Mathematics

contestada

In an emergency, a driver brings a car to stop in 8.0 s. The car was going 21 m/s when the braking began. What was the stopping distance

Respuesta :

PollyP52 PollyP52

14-01-2020

Answer:

84 m.

Step-by-step explanation:

Use an equation of motion under constant acceleration:

initial speed u = 21, final speed v = 0, time t = 8, distance s = ?.

s = (u + v) t / 2

= (21 + 0)* 8 / 2

= 168 / 2

= 84 m

Answer Link

Otras preguntas

What were the key variables that contributed to the movement of African American popular music from the racial margins into the mainstream in the 1950s? What ke

Bone remodeling keeps bones strong as ____________ break down bone and ____________ rebuild it. This process replaces as much as ____________ of bone each year.

A main idea of multicultural feminism is that ________ people should seek the elimination of gender itself. minority women are better off than non-minority men.

Select the correct statement about complement. A. Complement can be activated through three pathways: classical, secondary, and alternate. B. Complement protein

While President Nixon was associated with détente, he armed anti-communist dictators in Iran, the Philippines, and South Africa, and helped to overthrow the soc

Based on the output when testing to see if the population mean heart rate of UK students is not equal to 80, identify the following. a. Identify the alternativ

Three children are trying to balance on a seesaw, which consists of a fulcrum rock, acting as a pivot at the center, and a very light board 3.6 m long. Two play

The Rist research demonstrated that social class and not intellectual capability was the basis of how teachers assigned students to reading levels in kindergart

Suppose you have been given the task of distilling a mixture of hexane + toluene. Pure hexane has a refractive index of 1.375 and pure toluene has a refactive i

When given a graph, the vertical line test can be used to determine functionally. Describe the vertical line test and explain the reasons why a graph would, or