How is constant velocity indicated on a motion map
2 answers:
Constant velocity refers to constant rate of change in position with time
which means equal change in position of object in equal interval of time
so it we are plotting a motion diagram where we will represent a position - time graph then
the motion plot must be a straight line with a constant slope
here we know that
so velocity is slope of the position time graph which remains constant
Similarly if the graph is plot against velocity and time then we will again represent it with straight line but this time the straight line must be of zero slope because here velocity is not changing with time.
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Answer:
The average power dissipated is 72 W.
Explanation:
Given;
peak voltage of the AC circuit, V₀ = 120 V
resistance of the resistor, R = 100 -ohm
The average power dissipated by the resistor is given by;
where;
is the root-mean-square-voltage
The average power dissipated by the resistor is calculated as;
Therefore, the average power dissipated is 72 W.
Answer:
A) 580m
B) 0 m/s
C) 9.8m/s^2
D) downward
E) 10.87s
F) 106.62 m/s
Explanation:
A) The distance traveled by the rocket is calculated by using the following expression:
a: acceleration of the rocket = 2.90 m/s^2
t: time of the flight = 20.0 s
B) In the highest point the rocket has a velocity with magnitude zero v = 0m/s because there the rocket stops.
C) The engines of the rocket suddenly fails in the highest point. There, the acceleration of the rocket is due to the gravitational force, that is 9.8 m/s^2
D) The acceleration points downward
E) The time the rocket takes to return to the ground is given by:
10.87 seconds
F) The velocity just before the rocket arrives to the ground is: