Which is an example of a physical change?
2 answers:
You might be interested in
Answer:
maximum possible speed by solving above equation for 7D is
minimum possible value of speed for solving x = 6D is given as
Explanation:
Let the nozzle of the hose be at the origin. Then the nearest part of the rim of the tank is at (, ) = (6, 2) and the furthest part of the rim is at (, ) = (7, 2).
The trajectory of the water can be found as follows:
Now from above two equations we have
now we know that height of the cylinder is 2D so we have
by solving above equation we have
now we know that maximum value of x is 7D
so the maximum possible speed by solving above equation for 7D is
minimum possible value of speed for solving x = 6D is given as
Answer:
Yes, it's possible.
Explanation:
The average velocity is a mean value:
.
during that displacement, it may occur that the acceleration would negative at any time so at that moment if the velocity goes in the same direction with the acceleration, the velocity will be negative, it may take just a few moments and then go positive again. The velocity can also take negative values if for a moment the object was going backward (opposite direction). so the average velocity only means that the major of the velocity was positive.