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4 years ago

15

Imajine que uma pessoa ande com velocidade de 150 passos por minuto e que o tamanho medio de seu passo seja de 1 metro quanto te

mpo ela levaria para pecorrer 6 quilômetros ?

1 answer:

Ivanshal [37]4 years ago

4 0

128.00 minutos <span>andar</span>

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D) decreasing the temperature lowers the average kinetic energy of the reactants.

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3 years ago

Round to three significant figures.<br> 0.0785584 rounds to

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0.0786

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"5 " in ten thousandth place is rounded off to "6" because the next digit is also another "5",

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A current of 9 A flows through an electric device with a resistance of 43 Ω. What must be the applied voltage in this particular

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Post WWII Germany was divided into four zones with the Americans occupying one zone and all of the following countries occupying

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b. Italy

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2 years ago

The engine in an imaginary sports car can provide constant power to the wheels over a range of speeds from 0 to 70 miles per hou

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Answer:

$t=5.3687\ s$ is the time taken by the car to accelerate the desired range of the speed from zero at full power.

Explanation:

Given:

Range of speed during which constant power is supplied to the wheels by the car is $0\ mph\ to\ 70\ mph$ .

Initial velocity of the car, $v_i=0\ mph$

final velocity of the car during the test, $v_f=32\ mph=14.3052\ m.s^{-1}$

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initial velocity of the car, $u_i=0\ mph$

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Now the acceleration of the car:

$a=\frac{v_f-v_i}{t}$

$a=\frac{14.3052-0}{1.2}$

$a=11.921\ m.s^{-1}$

Now using the equation of motion:

$u_f=u_i+a.t$

$64=0+11.921\times t$

$t=5.3687\ s$ is the time taken by the car to accelerate the desired range of the speed from zero at full power.

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3 years ago