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Fynjy0 [20]
3 years ago
8

A 1400-kg car traveling east at 25m/s collides with a 1800-kg car traveling at a speed of 20m/s in a direction that makes angle

of 40degree south of west. the cars stick together after the collision. what is the magnitude and direction of the velocity of the cars after the collision?
Physics
1 answer:
julia-pushkina [17]3 years ago
7 0
M1*V1 + M2*V2 = M1*V + M2*V.
1400*25 + 1800*20[180+40]=1400*V+1800*V.
Divide both sides by 100:
14*25 + 18*20[220o] = 14V + 18V.
350 + 360[220o] = 32V.
350 - 276-231i = 32V.
74 - 231i = 32V.
242.6[-72.2o] = 32V.
V = 7.6m/s[-72.2o]=7.6m/s[72o] S. of E.
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Answer:

 a = 1,008 10⁻³ m / s²

Explanation:

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   Let's reduce the magnitudes to the SI system

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Let's calculate

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A cube has sides of 11.4 cm. What is its volume? 1,482 cm3 130 cm3 1,443 cm3 34.2 cm3
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<span>V = s^3 </span>
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<span> V = 1482 cm^3</span>

<span>however the Surface Area of a cube is the combined area of all the sides </span>
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gavmur [86]

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Two loudspeakers are 1.60 m apart. A person stands 3.00 m from one speaker and 3.50 m from the other. (a) What is the lowest fre
VMariaS [17]

Answer:

Explanation:

Given

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x_2-x_1=(2m+1)\cdot \frac{\lambda }{2}

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frequency is given by

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For next frequency which will cause destructive interference is

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frequency corresponding to this is

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\lambda =\frac{1}{5}\ m

Frequency corresponding to this wavelength

f_3=\frac{343}{\frac{1}{5}}

f_3=1715\ Hz                        

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