Ax = ½ (vr+ vi) At Ax =2 a(At)+ V¡At Vf = aAt + vị v = v + 2aAx 3) A student dives off of a 22 meter tall bridge into a deep river. Using a standard value for gravity of g = 10 m/s?, what is the student's speed the instant before she touches the water? Vf = Equation(s) used: Vi= At = (Not Required) Ax = a = 4) A motorcycle accelerates from rest to a speed of 52.5m/s in 15s. What is the motorcycle's speed at t = 11s? Equation(s) used: Vf= Vi= At = Ax = (Not required) a =

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter9: Fluids And Solids
Section: Chapter Questions
Problem 54P
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please answer all steps to both questions. 3 & 4
Ax = ½ (vf+ vi) At
Ax = 2 a(At)2 + V;At
Vf = aAt + vị
v? = v? + 2aAx
3) A student dives off of a 22 meter tall bridge into a deep river. Using a standard value for
gravity of g = 10 m/s², what is the student's speed the instant before she touches the water?
Vf=
Equation(s) used:
Vi =
At =
(Not Required)
Ax =
a =
4) A motorcycle accelerates from rest to a speed of 52.5m/s in 15s. What is the motorcycle's
speed at t= 11s?
Equation(s) used:
Vf=
Vi =
At =
Ax =
(Not required)
a =
Transcribed Image Text:Ax = ½ (vf+ vi) At Ax = 2 a(At)2 + V;At Vf = aAt + vị v? = v? + 2aAx 3) A student dives off of a 22 meter tall bridge into a deep river. Using a standard value for gravity of g = 10 m/s², what is the student's speed the instant before she touches the water? Vf= Equation(s) used: Vi = At = (Not Required) Ax = a = 4) A motorcycle accelerates from rest to a speed of 52.5m/s in 15s. What is the motorcycle's speed at t= 11s? Equation(s) used: Vf= Vi = At = Ax = (Not required) a =
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