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3 years ago

Urgent urgent urgent PLEASE help❤️❤️

Mathematics

2 answers:

Lostsunrise [7]3 years ago

5 0

1. D c(7)

2. A c(m)=420

Georgia [21]3 years ago

3 0

Answer:

1. c(m)=7

2. c(M)=420

Step-by-step explanation:

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2 years ago

A car is being driven at a rate of 40 ft/sec when the brakes are applied. The car decelerates at a constant rate of 10 ft/sec2.

IRISSAK [1]

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Step-by-step explanation:

Given:

Initial speed of the car ( $v_0$ ) = 40 ft/sec

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Final speed of the car ( $v_x$ ) = 0 ft/sec

Let the distance traveled by the car be 'x' at any time 't'. Let 'v' be the velocity at any time 't'.

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$\int\limits^0_{40} {v} \, dv=\int\limits^x_0 {-10} \, dx\\\\\left [ \frac{v^2}{2} \right ]_{40}^{0}=-10x\\\\-10x=\frac{0}{2}-\frac{1600}{2}\\\\10x=800\\\\x=\frac{800}{10}=80\ ft$

Therefore, the car travels a distance of 80 feet before stopping.

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3 years ago