Answer:
Option D - 0.2 s
Explanation:
We are given;
Initial velocity; u = 7 m/s
Height of table; h = 1.8m
Now,since we want to find the time the car spent in the air, we will simply use one of Newton's equation of motion.
Thus;
h = ut + ½gt²
Plugging in the relevant values, we have;
1.8 = 7t + ½(9.8)t²
4.9t² + 7t - 1.8 = 0
Using quadratic formula to find the roots of the equation gives us;
t = -1.65 or 0.22
We can't have negative t value, thus we will pick the positive one.
So, t = 0.22 s
This is approximately 0.2 s
Answer:
984.8 mph
Explanation:
The initial velocity of the jet in terms of components is
where we took east as positive x-direction and north as positive y-direction.
The velocity of the wind is
So, the resultant velocity of the jet considering also the wind is
And so the new speed of the jet is
The best and most correct answer among the choices provided by the question is the fourth choice. The magneto air gap is a precision measurement that's taken between the <span>center electrode and the grounding electrode of a spark plug. </span>I hope my answer has come to your help. God bless and have a nice day ahead!
A body that has relatively few free electrons and offers comparatively great resistance to the movement of free electron is AN INSULATOR.
Insulators does not allow the passage of heat, so they do not conduct electricity, instead they inhibit the flow of electricity. Insulators are often used in variety of items to ensure protection against electric shock or heat.