The amount of time that passes from when this skateboarder begins to slow down until she begins to move back down the incline is 8.75 seconds.
<u>Given the following data:</u>
- Acceleration = -0.2
To calculate the amount of time that passes from when this skateboarder begins to slow down until she begins to move back down the incline, we would apply the first equation of motion;
<h3>
The formula for the first equation of motion.</h3>
Mathematically, the first equation of motion for a decelerating object is given by this formula;
<u>Where:</u>
- t is the time measured in seconds.
Substituting the given parameters into the formula, we have;
Time, t = 8.75 seconds.
Read more on acceleration here: brainly.com/question/24728358
Λ= V/f
<span>but change it to represent the speed of light, c </span>
<span>λ= c/f </span>
<span>c = 3.00 x 10^8 m/s </span>
<span>Plug in your given info and solve for λ(wavelength) </span>
<span>λ= 3.00 x 10^8 m/s / 7.5 x 10^14 Hz
(3.00 x 10^8) / (7.5 x 10^14) = 300,000,000 / 750,000,000,000,000 = 0.0000004
Hope this helps :)
</span>
Answer: (A) At terminal velocity ...
Explanation:
All points to the left of zero on a horizontal number line are negative. A number line<span> is a picture of a graduated straight </span>line<span> that serves as abstraction for real </span>numbers. <span>This </span>number line<span> can be extended to the left to </span>represent numbers<span> which are smaller than </span>0<span>. Such </span>numbers<span> are called negative </span>numbers<span>.</span>
Answer:
a) 
b) 
c) 
d) 
Explanation:
a) The initial vertical velocity is given by:
Where:
θ: 25°
v: is the magnitude of the speed = 23 m/s
b) The initial horizontal velocity can be calculated as follows:
c) The flight time can be calculated using the following equation:
Where:
x: is the total distance = 42 m
d) The maximum height is given by:
Where:
: is the final vertical velocity =0 (at the maximum heigth)
g: is the gravity = 9.81 m/s²
I hope it helps you!
