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ira [324]
4 years ago
8

A car accelerates uniformly from +10.0 m/s to +40.0 m/s over a distance of 125 m. How long did it take to go that distance? Show

all your work, including the equation used, given and unknown quantities, and any algebra required. Make sure your answer has the correct number of significant figures.
Physics
1 answer:
melamori03 [73]4 years ago
5 0
3 seconds my dude i think
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Which of the following is the best example of a heat conductor?
natka813 [3]

Answer:

<h3>Anything with a dark shade in color and with no reflective surface or any metal</h3>

Explanation:

In this case, a dark shirt or blanket would be a heat conductor as well as metal would be, too

4 0
3 years ago
PLEASE HELP ME I AM STUCK, FRUSTRATED, AND DONT EVEN KNOW HOW TO START THIS PROBLEM AHHSRFHRERHYT
Naily [24]

It takes the car 14 seconds to stop

Explanation:

A car is traveling at a constant velocity of 19 m/s when the driver puts

on the brakes to accelerate it at -1.4 m/s² until stopped

1. The initial velocity is 19 m/s

2. The acceleration is -1.4 m/s²

3. The final velocity is zero

We need to find how long it takes the car to stop

We can find the time by using the rule

→ v = u + a t

where v is the final velocity, u is the initial velocity, a is the

acceleration and t is the time

→ v = 0 m/s , u = 19 m/s , a = -1.4 m/s²

Substitute these values in the rule

→ 0 = 19 + (-1.4) t

→ 0 = 19 - 1.4 t

Add 1.4 t to both sides

→ 1.4 t = 19

Divide both sides by 1.4

→ t = 13.57 ≅ 14 seconds

It takes the car 14 seconds to stop

Learn more:

You can learn more about velocity in brainly.com/question/10772739

#LearnwithBrainly

4 0
3 years ago
At what speed must a 0.6 kg stone be thrown in order that it has a relativistic mass of 0.76 kg? (c = 3.00 x 10^8 m/s) A) 0.6976
soldier1979 [14.2K]

Answer:

The speed of the stone is 0.6138 c.

(B) is correct option.

Explanation:

Given that,

Mass of stone m= 0.6

Relativistic mass = 0.76

We need to calculate the speed

Using formula of rest mass

m_{r}=\dfrac{m_{0}}{\sqrt{1-\dfrac{v^2}{c^2}}}

v^2=(\dfrac{m_{0}^2}{m_{r}^2}-1)c^2

Put the value into the formula

v^2=(\dfrac{0.6^2}{0.76^2}-1)\times c^2

v=\sqrt{0.37673c^2}

v=0.6138c

Hence, The speed of the stone is 0.6138 c.

3 0
3 years ago
The formal beginning of psychology occurred in Germany and the United States by which two men ?
o-na [289]

Answer: Two men who helped in the development of psychology in Germany was Wilhelm Wundt, and in United States was William James.

Explanation:

Wilhelm Wundt was a German scientist, who was the first person who introduced psychology. He studied the conscious experience as a part of scientific study. It emphasis the identification of the components of the consciousness. Introspection is the process through which conscious experiences can be analyzed.

William James was a scientist, native of U.S. His purpose was to study the function of behavior all over the world. This perspective was known as functionalism. This emphasizes over the fact that how mental activities helps how organisms fit into its surrounding environment.

6 0
4 years ago
A train accelerates from 23m/s to 190m/s in 54 seconds. What was its acceleration?
Ierofanga [76]

Answer:

Use the method on the image and solve it.

3 0
4 years ago
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