2 years ago

If you travel 450 meters in 40 seconds, what is your average speed in meters per

Physics

2 answers:

Vedmedyk [2.9K]2 years ago

8 0

Answer:

The answer is a 11.25m/s

cupoosta [38]2 years ago

7 0

The answer should be A. 11.25

You might be interested in

Tragically, the united states lost astronauts in accidents involvin

sweet-ann [11.9K]

The quest to put Americans on the moon before the Soviets do. During the Space Race, a couple of astronauts went up into space only to be tragically killed in an explosion.

7 0

2 years ago

Read 2 more answers

A hop is a springing from one foot but landing on the other foot? Question 4 options: True False

Rama09 [41]

Answer:

i thinc it's False

Explanation:

sorry im 6

6 0

2 years ago

Read 2 more answers

What is impossible for a machine to do

oee [108]

Answer:

Create a living person.

Explanation:

4 0

3 years ago

Read 2 more answers

Which property of gold allows it to be used this way?

densk [106]

the electric conductivity of gold is very high

3 0

3 years ago

Calculate a rate of cooling down of air from 80 C to 5C Show calculation. Give an answer in cubic meters per minute and cfm.

antoniya [11.8K]

Explanation:

Given that,

Rate of cooling of air

Initial temperature= 80°C

Final temperature = 5°C

We need to calculate

Using newton's law of cooling

$\dfrac{dT}{dt}=c(T-T_{0})$

$\dfrac{dT}{dt}=c(\dfrac{T_{1}+T_{2}}{2}-T_{0})$

Where, $dT=T_{1}-T_{2}$

Here, $T =\dfrac{T_{1}+T_{2}}{2}$

$T_{0}$ = 25°C (surrounding temperature)

dt = 1 minute

$\dfrac{dT}{dt}=c(\dfrac{T_{1}+T_{2}}{2}-T_{0})$

Put the value into the formula

$\dfrac{80-5}{1}=c(\dfrac{85}{2}-25)$

$c=\dfrac{75}{17.5}$

$c=4.285\ cubic\ meter/minute$

Hence, This is the required answer.

3 0

2 years ago