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Korolek [52]
2 years ago
8

A bored student makes a poor life decision and decides to go do donuts in a school parking lot. The student jumps into his/her 1

500kg car and heads to the lot. Assume he/she drives in circles with a 10 meter radius and the coefficient of friction is 0.7 between the tires and the dry road. A) What is the maximum speed car can go before it starts to slide?
Physics
1 answer:
DerKrebs [107]2 years ago
7 0

Answer:

The maximum speed the car can go before it star to slide is

v=8.2 m/s

Explanation:

Using the conservation of energy the force in motion is

F=m*a

F_k=u*F_N

F_N=m*g

F_k=m*a_c

u*m*g=m*a_c

a_c=\frac{V^2}{r}

u*g=\frac{V^2}{r}

Solve to v'

v=\sqrt{u*r*g}=\sqrt{10m*0.7*9.8m/s^2}=\sqrt{68.6 m^2/s^2}

v=8.2 m/s

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Two marbles are launched at t = 0 in the experiment illustrated in the figure below. Marble 1 is launched horizontally with a speed of 4.20 m/s from a height h = 0.950 m. Marble 2 is launched from ground level with a speed of 5.94 m/s at an angle above the horizontal. (a) Where would the marbles collide in the absence of gravity? Give the x and y coordinates of the collision point. (b) Where do the marbles collide given that gravity produces a downward acceleration of g = 9.81 m/s2? Give the x and y coordinates.

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2 years ago
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Which combination of initial horizontal velocity, (vh) and initial vertical velocity, (vv) results in the greatest horizontal ra
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now here we will have

0 = v_v t - \frac{1}{2}gt^2

t = \frac{2v_v}{g}

now the range of projectile is given as

R = horizontal\: speed \times time

R = v_h(\frac{2v_v}{g}

now here we know that

v_v = v_0 sin\theta

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now the range is given as

R = \frac{2(vsin\theta)(vcos\theta)}{g}

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1 year ago
What is the wavelength of light waves if their frequency is 5.0x1014 Hz and the speed of light 3 x
Marat540 [252]

Answer:

D. 0.60 um

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Given the following data;

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Speed = 3 x 10^8 m/s

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Substituting into the equation, we have

Wavelength = 3 x 10^8/5.0x10^14

Wavelength = 6 × 10^7m

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6 × 10^7 meter = 0.6 micrometer.

5 0
1 year ago
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