The impact of the material
type with which the slope is made affects the acceleration. Acceleration will
be higher and smoother if the material of the slope surface is smoother as
opposed to a texture which is not smooth. Smoother surface allows more acceleration
because it will have less friction and resistance. Otherwise the friction will
slow the object down for example a grassy ground will have more friction than a
well maintained marble floor.
The correct answer for the maginitude of the average velocity of the particle between t = 1.0 s and t = 4.0 s is 0.67 m/s .
The average velocity concept was used to solve this problem.First, use the figure to calculate the distance and time required.The average velocity is then calculated using the time interval and total displacement. Average velocity is a measure of displacement over time. This is also known as the average rate of change in position over time.
The average velocity is as follows:
The velocity is denoted by v = (v 2-v 1) / (t 2- t 1)
t 1 = 4 sec
t 2 = 1 sec
t2 - t1 = 4 seconds - 1 second = 3 seconds
x1 = 2 m
x 2 = 0 m
x 2- x1 = 2 m
The velocity formula is v = (x 2- x1) / (t2- t 1)
the answer = 0.67 m/s
Learn more about average velocity here :-
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Answer:
The difference in the amount of energy transferred by the two bulbs is 1200 J.
Explanation:
The energy transferred by the two lightbulbs can be calculated with the given equation:

Where P is the power and t is the time
For the 60 W lightbulb:

For the 100 W lightbulb:

Hence, the difference in the amount of energy transferred is:

Therefore, the difference in the amount of energy transferred by the two bulbs is 1200 J.
I hope it helps you!
I did chocolate
1- 1:02
2-47 secs
3- 17 secs
Hope I helped ;)