Since the device is a speedometer, the data it read is the speed of the racecar. Data recording involving time usually uses time as the independent variable. It was also said in the problem that it records the speed every second which shows that the time interval is constant. This means that only other data, the car's speed, is the dependent variable.
Answer:
w = 706.32 [N]
Explanation:
The force due to gravitational acceleration can be calculated by means of the product of mass by gravitational acceleration.
w = m*g
where:
w = weight [N] (units of Newtons)
m = mass = 72 [kg]
g = gravity acceleration = 9.81 [m/s²]
Then we have:
![w = 72*9.81\\w = 706.32 [N]](https://tex.z-dn.net/?f=w%20%3D%2072%2A9.81%5C%5Cw%20%3D%20706.32%20%5BN%5D)
It’s a speed of 15 m/s so it would be their velocities after collision
Reactants have to be equal to the mass of the products<span>.
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Answer:
true I, II and III
Explanation:
The force is a vector quantity, by local it must be added as vectors, we can suppose several cases
.i) the vectors are colonial, so their sum is maximum
F_max = 9 + 15 + 18
F_max = 42 N
This is the maximum value
ii) the anti-parallel vectors giving a minimum value
F_min = 15 + 9-18
F_min = 6 N
iii) the vectors have angles between them, so we must use the Pythagorean theorem to find the resultant, which is an intermediate value between the two extreme values found.
Let's take a look at each statement
I) True This is the maximum value of the force if all the vectors are colonial
II) True The minimum value is 6 N, so zero can never be reached
III) True these bores are between the maximum values and the direction of the vectors, lower values occur when the forces have angular between them
IV) False. Force can never reach zero
V) False. Several of the above are conclusions of the exercise
