Define escape velocity?

Answers

Answer 1

Answer: escape velocity is the minimum velocity required for an object to come out of the gravity of earth or any planet !

for earth , it is 11.2 km/sec

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What do multimillion-dollar sponsorships of famous athletes symbolize? a)globalization b)leadership
c)commercialization
d)sportsmanship

Answers

These sponsorships are somehow related to globalisation, as they are a global phenomenon, but some of them are on a very local scale, so globalisation is not a necessary part in them.

The best answer is c) commercialisation - atheletic competitions are turned into sources of profit, and athletes compete with the thought of winning money through it and the companies hope to increase their revenue by advertising during the sports events

Answer:

The answer for Plato is C.

A jet plane lands at a speed of 100 m/s and can accelerate at a maximum rate of -5.00 m/s^2 as it comes to a rest.(a from the instant the plane touches the runaway, what is the minimum time needed before it can come to a rest?
(b Can this plane land on a runaway that is only 0.800 km long?
shown work pls will reward alot of points

Answers

Answer:

a) t = 20 s, b) x = 1000 m, As the runway is only 800 m long, the plane cannot land at this distance

Explanation:

This is a kinematics exercise

a) in minimum time to stop,

v = vo + at

v = 0

t = -v0 / a

we calculate

t = -100 / (5.00)

t = 20 s

b) Let's find the length you need to stop

v² = vo² + 2 a x

x = -v0 ^ 2 / 2a

x = - 100² / 2 (-5.00)

x = 1000 m

As the runway is only 800 m long, the plane cannot land at this distance.

How far can a bike rider traveling at 5.2 m/s go in 15 seconds

Answers

If he's traveling at 5.2 m/s, then he covers
5.2 meters in the 1st second
5.2 meters in the 2nd second
5.2 meters in the 3rd second
5.2 meters in the 4th second
.
.
.
.
5.2 meters in the 14th second, and
5.2 meters in the 15th second.

He covers 5.2 meters 15 times in 15 seconds.
To find the total distance, you could write down 5.2 meters
15 times and add them all up. Or you could use the newly-
discovered, labor-saving process called 'multiplication' to do
the same thing. With multiplication, it can be done in one line:

(5.2 m/s) x (15 sec) = 78 meters .

A person runs 400 meters in a straight line. Determine their distance and displacement. Is the distance equal to the displacement for a person that runs 2.5 times around a circular track?

Answers

Answer:

their distance and displacment are both 400 meters. and No distance and displacement are not equal for a person who runs 2.5 times a circular track.

Explanation:

if you run in a ircle you are coming back to the starting poing ad remember distane is the total length travlled while displacement is the final- initial length

A car traveling in a straight line has a velocity of 3.79 m/s at some instant. After 5.4 s, its velocity is 11.9 m/s. What is its average acceleration in this time interval? Answer in units of m/s 2

Answers

|Acceleration| = (change in speed) / (time for the change)

Change in speed = (speed at the end) minus (speed at the beginning).

Change in speed = (11.9 m/s - 3.79 m/s) = 8.11 m/s

|Acceleration| = (8.11 m/s) / (5.4 sec) = 1.502 m/s² (rounded)

This solution is written in terms of speed and the absolute value
of acceleration. The question gives no information regarding the
direction of motion at any time, so it's not possible to say anything
about velocity, or the direction of acceleration.

Describe briefly how fossil fuels were formed

Answers

Fossil fuels are formed by organic remains that have been buried under rock. "Organic remains" can include animals and plants (think of oil and dinosaurs).

Fossil fuels were formed by the compression of dead plants and animals due to high pressure and temperature.
Some fossil fuels are coal, petroleum and natural gas

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