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wel
4 years ago
6

What is the Kinetic energy of a 2000 kg bus that is moving at 30m/s? Explain please

Mathematics
1 answer:
agasfer [191]4 years ago
4 0

There's a formula for that.

KE = (1/2)mv²

... = (1/2)(2000 kg)(30 m/s)²

... = 900,000 kg·m²/s²

... = 900,000 J

_____

It is helpful to know the relationship between kilograms, meters, seconds, and Newtons or Joules.

1 J = 1 kg·m²/s²

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Answer:

40%

Explanation:

To find the percent decrease, use the formula

% decrease = (amount of decrease)/(original amount)

The amount of decrease in the pumpkin is

6.5 - 3.9 = 2.6

The original amount is 6.5.

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Answer:

x=151/64   y=9/8 z=-51/32

Step-by-step explanation:

2x+2y+5z- (2x-y+z)=-1-2

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2x+2y+5z- (2x+4y-3z)=-1-14

-2y+8z=-15

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-2y+8z=-15 (-3)

6y+8z=-6

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3y-204/32=-3

3y= -96/32+204/32

3y=108/32

y=36/32=9/8

2x+2*9/8+5*(-51/32)=-1

2x+9/4-255/32=-1

2x+72/32-255/32=-1

2x-183/32=-32/32

2x=151/32

x=151/64

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Step-by-step explanation:

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