Please with answers and a small explanation In the following problem, the orgin
ID: 2275080 • Letter: P
Question
Please with answers and a small explanation
In the following problem, the orgin of the coordinate system is located at the edge of the cliff.
A sled rides off the edge of a cliff, Just at the edge it's velocity is horizontal and has a magnitude of 15 m/s. Using a coordinate system (x,y)
Find the sled's horizontal position (x coordinate) at 0.7 s after leaving the edge
A -- 10.5 m
B -- 2.4 m
C -- 5.25 m
D -- -2.4 m
Find the sled's vertical position (y coordinate) at 0.7 s after leaving the edge
A -- 10.5 m
B -- -2.4 m
C -- -5.25 m
D -- 2.4 m
Find the sled's speed at 0.7 s after leaving the edge
A. 15 m/s
B. - 6.86 m/s
C. 272.06 m/s
D. 16.49 m/s
Find the sled's acceleration at 0.7 s ater leaving the edge
A. 0 m/s
B. -15 m/s^2
C. -9.8 m/s^2 j
D. -9.8 m/s^2 i
Explanation / Answer
1)
s= ut = 15*.7 = 10.5 m
2)
s = .5*9.8*.7^2 = 2.401 m
3)
vx = 15 [doesnt change as theres no acceleration ]
vy = 0 + 9.8*.7 = 6.86
speed = sqrt(15^2 + 6.86^2) = 16.5 m/s
4)
its acceleration is = 9.8 m^2/s [doesnt change]