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ch4aika [34]
3 years ago
7

A driver looks at her dashboard and reads that she is traveling at 100 kilometers per hour. What does this measurement represent

?
A) time
B) distance
C) average speed
D) instantaneous speed
Physics
2 answers:
Sergio039 [100]3 years ago
8 0
C. Average Speed 
because they are not giving you a specific time or distance so it must relate to speed. her average speed it 100 km/hr therefore the answer should be C
Dmitry_Shevchenko [17]3 years ago
6 0
The answer is C!! 100 kilometers per hour is an average speed.
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Part A What is the resistance of a 4.4 m length of copper wire 1.3 mm n diameter? The resistivity of copper is 1.68x 10-8 Ω-m Ex
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Explanation:

It is given that,

Length of the copper wire, l = 4.4 m

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We need to find the resistance of the copper wire. It is given by :

R=\rho\dfrac{l}{A}

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Answer:

The greatest speed of the car is 19.36m/s

Explanation:

The maximum speed the car will attain without skidding is given by:

F= uN = umg ...eq1

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mv^2/r = umg

Dividing both sides by m, leaves you with:

V= Sqrt(ugr)

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r = raduis

Given:

U = 0.82

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V = Sqrt(0.82 × 9.8 × 45)

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V = 19.36m/s

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