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Nadya [2.5K]
3 years ago
10

A car is slowed because the air it is moving through pushes against it. This contact force is know as air...

Physics
2 answers:
san4es73 [151]3 years ago
5 0
Resistance i would assume 
Arte-miy333 [17]3 years ago
3 0
The answer is
a) resistance
                   
                          
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The graph below shows the velocity of a car over time.
jekas [21]

Answer:

D. Calculate the area under the graph.

Explanation:

The distance made during a particular period of time is calculated as (distance in m) = (velocity in m/s) * (time in s)

You can think of such a calculation as determining the area of a rectangle whose sides are velocity and time period. If you make the time period very very small, the rectangle will become a narrow "bar" - a bar with height determined by the average velocity during that corresponding short period of time. The area is, again, the distance made during that time. Now, you can cover the entire area under the curve using such narrow bars. Their areas adds up, approximately, to the total distance made over the entire span of motion. From this you can already see why the answer D is the correct one.

Going even further, one can make the rectangular bars arbitrarily narrow and cover the area under the curve with more and more of these. In fact, in the limit, this is something called a Riemann sum and leads to the definition of the Riemann integral. Using calculus, the area under a curve (hence the distance in this case) can be calculated precisely, under certain existence criteria.

3 0
3 years ago
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Object C has a mass of 3,600 kilograms. Object D has a mass of 900 kilograms. Both objects were placed on different planets so t
FinnZ [79.3K]
The correct answer would be 4
7 0
3 years ago
What is the force of repulsion between two points positive charges 5 and 8 separated at a distance of 0.02m apart
Zinaida [17]

Explanation:

F =(frac{1}{4{pi}{varepsilon}_o}) x (frac {q_1q_2}{r^2})

F =(frac {5 {times} 10 {times} 8 {times} 10}{0.002 {times} 0.002}) x 9 x 10

F = 900N

4 0
2 years ago
Which perspective best explains the bystander effect whereby individuals will be less likely to help someone in need because of
DerKrebs [107]
The perspective which best explain this is SOCIO-CULTURAL PERSPECTIVE.
Socio-cultural perspective is a theory which explains the awareness of situations surrounding people and how their behavior is determined by their environment, culture and social values.
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3 years ago
A train travels 50 kilometers in 4 hours, and then 74 kilometers in 2 hours. What is its average speed?
olga55 [171]

Answer:

37.65

Explanation:

50/4 + 74/2

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3 years ago
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