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rodikova [14]
3 years ago
14

A small car of mass m and a large car of mass 4m drive along a highway at constant speed. they approach a curve of radius r. bot

h cars maintain the same acceleration a as they travel around the curve. how does the speed of the small car vs compare to the speed of the large car vl as they round the curve? hints
Physics
2 answers:
matrenka [14]3 years ago
7 0
Hints?????????????????????????
natali 33 [55]3 years ago
7 0

Answer:

Both speeds are equals ⇒ V_{S}=V_{L}

Explanation:

We know that the small car has mass ''m'' and the large car has mass ''4m''.

We also know that they approach a curve of radius ''r''.

Both cars maintain the same acceleration as they travel around the curve.

The centripetal acceleration in a curve has the following equation :

a_{c}=\frac{V^{2}}{r}  (I)

Where ''a_{c}'' is centripetal acceleration

Where ''V'' is the tangential speed and where ''r'' is the radius of the curve.

If we use the equation (I) to find V, we will find that the speed depends of the centripetal acceleration and the radius of the curve.

It doesn't depend of the mass. Therefore, the small car and the large car will have the same speed while they are travelling around the curve ⇒

V_{S}=V_{L}

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4 0
3 years ago
The speed of sound is measured to be 340 m/s on a certain day.
ziro4ka [17]
Answer: 1,224 km/h

Explanation:

To do this, we pick the first unit and convert
Picking m first and converting to km:
Since we're converting from a non-prefix to a prefix, we divide the value by the prefix were taking it to. In this case, kilo = 10³ which means we're going to divide our value by 1000 to convert it from m to km
340 m/s ÷ 1000 = 0.34 km/s
Now, let's convert our seconds to hour:
We'll need to calculate how many hours is equivalent to one second first;
1 hr = 60×60 seconds
X hr = 1 second
*Cross multiply*
1 × 1 = X × 60 × 60
1 = 3,600 X
X = 1 / 3,600
X = 2.778×10⁻⁴ hour
So, in the place of "1 Second", we're going to be inserting 2.778×10⁻⁴ hour instead
0.34 km / s = 0.34 km / 2.778×10⁻⁴ hour
(0.34 / 2.778×10⁻⁴) km/hour
1,224 km/h.
340 m/s = 1,224 km/h
6 0
2 years ago
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Anastaziya [24]
D- if i was right please mark me as a brainliest answer and a thank you
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Answer:

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