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3 years ago

5

A person drives an automobile with a mass of 450 kilograms at a velocity of 26 meters per second. The driver accelerates to a ve

locity of 30 meters per second. The difference in the automobile’s kinetic energy between the two velocities is joules. You may use the calculator.

1 answer:

gregori [183]3 years ago

7 0

Ec₁=mv₁²/2=450*26²/2=225*676=152100 J

Ec₂=mv₂²/2=450*30²/2=225*900=202500 J

ΔEc=Ec₂-Ec₁=202500-152100=50.4 kJ

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Answer:

17.6 N

Explanation:

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The change in momentum can be written as

$\Delta p = m(v-u)$

where

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Combining the two equations and substituting the values, we find the force exerted on the ball:

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sveticcg [70]

Answer: 288.8 m

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$d$ is the length of the slope

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Finding $d$ :

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3 years ago

Hey! anybody knows the answer then help me i will mark your answer!!!

Volgvan

10/9

Explanation:

option 2 is the correct answer

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If earth had no landmasses, then the idealized zonal precipitation pattern would have _______.

inysia [295]

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