Answer:
B
Explanation:
Reflect: (of a surface or body) throw back (heat, light, or sound) without absorbing it.
<span>Answer:
p[0] = 0
v[0] = 50 mi/h = 50 * 5280 / 3600 ft/s = 50 * (22/15) ft/s = 10 * 22/3 ft/s = 220/3 ft/s
a = -50 ft/s^2
a = -50
Integrate to find velocity
v = -50t + C
220/3 = -50 * 0 + C
220/3 = C
v = 220/3 - 50t
Find when v = 0
0 = 220/3 - 50 * t
50 * t = 220/3
t = 220 / 150
t = 22/15
Integrate the velocity function to find the position function
p = (220/3) * t - 25 * t^2 + C
0 = (220/3) * 0 - 25 * 0^2 + C
0 = C
p = (220/3) * t - 25 * t^2
t = 22/15
p = (220/3) * (22/15) - 25 * (484/225)
p = (4840 / 45) - 484 / 9
p = 484 * (10/45 - 1/9)
p = 484 * (2/9 - 1/9)
p = 484 * (1/9)
p = 484/9
p = 53.777777777777777777777777777778
53.8 feet</span>
Answer:
The short answer is that velocity is the speed with a direction, while speed does not have a direction.
Explanation:
Speed is how fast an object is moving. It is calculated by the displacement of space per a unit of time. Velocity is the rate at which an object changes position in a certain direction. It is calculated by the displacement of space per a unit of time in a certain direction. Velocity deals with direction, while speed does not.
Answer: Radio waves are transmitted easily through air. They do not cause damage if absorbed by the human body, and they can be reflected and refracted to change their direction. These properties make them ideal for communications.
Explanation:
For this you will need to use the Pythagorean’s theorem
Drawing this out may help!!
If you draw it out, you will get a triangle with a hypotenuse that’s you need to find out.
So 50^2 + 75^2
Square root = 8.67 approx
So displacement is 8.67 metres