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irakobra [83]
3 years ago
5

During which time period was the acceleration of the car the greatest?

Physics
2 answers:
Murljashka [212]3 years ago
8 0
C.) 2-3 seconds
And I know this is right
Allisa [31]3 years ago
6 0

c.) 2-3 seconds

Explanation:

Acceleration is defined as the ratio of change in velocity per unit time:

a=\frac{\Delta v}{\Delta t}

In a velocity-time graph, like the one attached here, acceleration corresponds to the slope of the curve.

Let's calculate the acceleration of the car in the different sectors:

a) 5-8 seconds: a=\frac{4 m/s-4 m/s}{8 s-5 s}=0

b) 0-2 seconds: a=\frac{5 m/s-0 m/s}{2 s-0 s}=2.5 m/s^2

c) 2-3 seconds: a=\frac{2 m/s-5 m/s}{3 s-2 s}=-1.5 m/s^2

d) 3-5 seconds: a=\frac{4 m/s-2 m/s}{5 s-3 s}=1.0 m/s^2

So, the acceleration is greatest in c) 2-3 seconds (the negative sign means it is a deceleration)

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A 460 W heating unit is designed to operate with an applied potential difference of 120 V (a) By what percentage will its heat o
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Answer:

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