I agree! Nervous gestures and stuttering
The velocity of an object in free fall increases downwards with time
- Please find attached the correct graph showing velocity as a function time, with the positive direction to be upwards.
Reason:
The known parameters are;
Location where the rocks are released; Earth
The time at which rock Y is released = A few seconds after rock X is released.
Required:
To select the graph that shows the vertical velocity of rock, <em>x</em>, as a function of time.
Solution:
Let <em>t </em>represent the time after which rock x are released, with the positive direction being upwards, we have;
- The equation for the velocity of x is v = -9.81·t
With the above equation, the graph of the vertical velocity of rock x is plotted with MS Excel.
Learn more about the graphs of velocity of object in free fall here:
brainly.com/question/11363021
There are different factors taken into consideration in production process. The statement that best justifies the use of the proposed modification as a way of creating an appropriate control for the investigation is that;
- The experiment can be repeated without the use of guaiacol, which will therefore show the effect of guaiacol on the reaction rates.
Oxygen is an element that exist naturally and can also be produced from different kinds of materials. This is often done by using a lot of different methods.
The natural method of getting oxygen is through photosynthesis where plants are known to use sunlight to convert carbon dioxide in the air into oxygen.
By not using guaiacol again when repeating the same experiment, one can therefore know if the guaiacol in one or different ways affect the chemical reaction of the elements.
Learn more about Oxygen gas Production from
brainly.com/question/17584736