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ziro4ka [17]
3 years ago
10

What would be an example of a chemical change that took a long time to occur

Physics
2 answers:
frutty [35]3 years ago
7 0
The rotting of fruit. it takes time and undergoes a change in colour and also the shape sometimes changes

weqwewe [10]3 years ago
3 0
<span>rusting takes a long time, and rusting is a chemical change</span>
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The parachute on a drag racing car deploys at the end of a run. If the car has a mass of 820 kg and the car is moving 36 m/s, wh
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In order to determine the required force to stop the car, proceed as follow:

Calculate the deceleration of the car, by using the following formula:

v^2=v^2_o-2ax

where,

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vo: initial speed = 36m/s

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Solve the equation above for a, replace the values of the other parameters and simplify:

\begin{gathered} a=\frac{v^2_o-v^2}{2x} \\ a=\frac{(36\frac{m}{s})^2-(0\frac{m}{s})^2}{2(980m)}=0.66\frac{m}{s^2} \end{gathered}

Next, consider that the formula for the force is:

F=ma

where,

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Replace the previous values and simplify:

F=(820kg)(0.66\frac{m}{s^2})=542.20N

Hence, the required force to stop the car is 542.20N

4 0
1 year ago
Does air resistance affect the motion of a falling object differently when the initial velocity of the object is greater?
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