Answer: I showed you all calculation . You did not attach any graph to question .
Explanation:
Lets first find Velocity
Vr=o m/s
Ve=?
a=1m/s²
t=2s
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a=(Vr-V)/t
1m/s²=Vr-0m/s/2s
2m/s=Vr
Lets find the time neeeded to stop :
a=1m/s²
Vs=2m/s
Vf=0m/s
a=(Vf-Vs)/t
t*1m/s²=2m/s
t=2 s
To prepare a 10.0% w/v solution of salt in water in a 100 mL volumetric flask, first you must weigh 10 g of salt because the 10 % 100 is 10 and the given should be 10 % w/v. place the 10 g salt to the volumetric flask then add water up until to mark of the volumetric flask then shake it.
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<h3><u>Answer;</u></h3>
- Amount of time the two substances are in contact
- Area in contact between the two substances
- Specific heat of the material that makes up the substances
<h3><u>Explanation</u>;</h3>
- The change in temperature of a substance is caused by heat energy. <em><u>The change in temperature will depend on factors such as mass of the substance, the type of material it is made from, the time taken , specific heat of the material that makes the substance, and also the area of contact</u></em>.
- <u>The amount of time</u> the two substances are in contact affect the change in temperature such that if the two bodies are in contact for a longer time then a bigger change in temperature will be observed.
- <u>Specific heat capacity </u>also determines the change in temperature that will be observed, such that a substance with a bigger specific heat capacity will record a small change in temperature.
