Answer:
Eric travelled at 21miles per hour
while stacy travelled at 105miles per hour.
Explanation:
speed = distance/time
then distance = speedxtime.
speed = x
time = 4hrs
Eric's distance after 4hrs = 4x
since stacy is 5 times faster than eric =
stacy's distance = (5x)4 = 20x
Stacy's distance - Eric's distance = 336m
20x - 4x = 336Miles
16x = 336miles
x = 336/16
x = 21miles per hour
so Eric was travelling at 21miles per hour
While Stacy was travelling at 105 miles per hour.
Where Fx = Fcos(Θ) and Fy = sin(Θ)<span>
Fcos(θ),Fsin(θ)</span>
Answer:
Explanation:
Given:
initial speed of the hammer when leaving the edge of the roof along the inclination of the roof, 
inclination of the roof form horizontal, 
- Since the hammer is moving from the top of the roof to the right edge, its horizontal component will be towards right and vertical component will be towards downward direction.
Now the horizontal velocity:
<u>The vertical velocity:</u>
B) is the correct answer hope this helps
Answer:
1.Length is one of the four factors on which the wave frequency depends. So if the length of the string changes then there will be a change in the vibration of string. So in this case if the lengths are different then the wave frequency of both will be different.
2. Wave speed will be the same as it depends on tension and linear density of it.
3. Wavelength itself is find out by the length of string so it depends on length and it will vary with the lengths of strings.
Explanation:
