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4 years ago

A car that travels 2 miles in .1 hours was traveling how fast

Physics

1 answer:

joja [24]4 years ago

7 0

Answer:

20 mph

Explanation:

Speed is expressed as rate of distance traveled per unit time. The formula is $s=\frac {d}{t}$ where d is distance in miles and t is time in hours. Therefore, the unit of speed will be miles per hour, mph.

Substituting 2 miles for distance, d and 0.1 hours for time, t then the speed of traveling is equivalent to $s=\frac {2}{0.1}=20mph$

The car was traveling at a speed of 20 miles per hour

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A car is travelling at a speed of 30 m/s. It decelerates at a rate of 12 m/s^2. Calculate the time taken for the car to come to

user100 [1]

Answer:

The answer to your question is: t = 2.5 s

Explanation:

Data

vo = 30 m/s

a = -12 m/s2

t = ?

vf = 0 m/s

Formula

vf = vo + at

Substitution

0 m/s = 30 + (-12)t

Solve it for t -30 = -12t

t = -30 / -12

t = 30/12 = 15/6 = 5/2

t = 2.5 s

8 0

3 years ago

Read 2 more answers

T/-15=-3. what is t?

sweet-ann [11.9K]

Answer:

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2 years ago

The Sun delivers an average power of 1150 W/m2 to the top of the Earth’s atmosphere. The permeability of free space is 4π × 10−7

My name is Ann [436]

Answer:

E=930.84 N/C

Explanation:

Given that

I = 1150 W/m²

μ = 4Π x 10⁻⁷

C = 2.999 x 10⁸ m/s

E= C B

C=speed of light

B=Magnetic filed ,E=Electric filed

Power P = I A

A=Area=4πr² ,I=Intensity

$I=\dfrac{CB^2}{2\mu_0}$

$I=\dfrac{CE^2}{2\mu_0 C^2}$

$E=\sqrt{{2I\mu_0 C}}$

$E=\sqrt{{2\times 1150\times 4\pi \times 10^{-7}(2.99792\times 10^8)}}$

E=930.84 N/C

Therefore answer is 930.84 N/C

4 0

3 years ago

Two cyclists, who weigh the same and have identical bicycles, ride up the same mountain, both starting at the same time. Joe rid

RSB [31]

Answer:

Option-A

Explanation:

In the given question, two cyclists of equal weight are riding the same mountain with cycles of the same weight but Joe reaches the top before Bob.

This scenario can be explained in terms of power and if we ignore the force of wind resistance and friction. Power refers to the work done per unit time, therefore, P= W/t. Since Joe rides up straight earlier than Bob shows that Joe has exerted more power than Bob that is the amount of work done by the Joe is greater than Bob.

Thus, Option-A is the correct answer.

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4 years ago

Bernie is driving down a highway at 28m/s. When bernie approaches a stop light, he presses on his brakes to bring his car to a s

coldgirl [10]

Answer:

Explanation:B

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3 years ago