A suspension bridge is 60.0 m above the level base of a gorge. A stone is thrown

Question

A suspension bridge is 60.0 m above the level base of a gorge. A stone is thrown or dropped from the bridge. . In each of the following, assume that there is no air resistance. Let g= 10.0m/s^2

a. if you drop the stone how long does it take for it to fall to the base of the gorge?
b. if you throw the stone straight down with of 20.0 m/s how long before it hits the ground?
c.if you throw the stone with a velocity of 20.0 m/s at 90.0 degrees above the horizontal how long before it hits the ground?
d.if you throw the stone with a velocity of 20.0 m/s at 30.0 degrees above the horizontal how far from the point directly below the bridge will it hit the ground?

Explanation / Answer

h0 = 60; g = 10

a) 0 = h0 + u*t - 0.5*g*t*t

u = 0

t = 3.464 seconds

b) 0 = h0 + u*t - 0.5*g*t*t

u = -20

t = 2 seconds

c) 0 = h0 + u*t - 0.5*g*t*t

u = 20

t = 6 seconds

d) 0 = h0 + u*t - 0.5*g*t*t

u = 20*sin(30)

t = 4.606 seconds

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.