A stone falls from a ledge and takes 8 seconds to hit the ground. The stone has an original velocity of 0 m/s. How tall is the ledge? A. 1,254.4 meters B. 39.2 meters C. 78.4 meters D. 313.6 meters
v=vo + at v=0 + (9.8)(8) v=78.4 y=1/2(vo + v)t y=1/2(78.4)(8) y=1/2(627.2) y=313.6m
s
Question
Updated 7/26/2020 12:24:12 PM
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v=vo + at
v=0 + (9.8)(8)
v=78.4
y=1/2(vo + v)t
y=1/2(78.4)(8)
y=1/2(627.2)
y=313.6m

Questions asked by the same visitor
car with a mass of 1,200 kilograms is moving around a circular curve at a uniform velocity of 20 meters per second. The centripetal force on the car is 6,000 newtons. What is the radius of the curve? A. 16 meters B. 80 meters C. 32 meters D. 160 meters
Question
Updated 92 days ago|5/5/2021 2:20:34 PM
A car with a mass of 1,200 kilograms is moving around a circular curve at a uniform velocity of 20 meters per second. The centripetal force on the car is 6,000 newtons.
cf = mv^2/r

6000 = 1200*400/r
r = 80 meters
Added 92 days ago|5/5/2021 2:20:34 PM
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