Part A Copper, 9.0 x 10^-3 kg/cm^3 Expressed your answer with the appropriate un
ID: 1307980 • Letter: P
Question
Part A
Copper, 9.0 x 10^-3 kg/cm^3
Expressed your answer with the appropriate units.
Value = Units =
Part B
Water, 1.0 g/cm^3
Express your answer with the appropriate units.
Value = Units =
Part A
What is the rock's velocity as it hits the bottom of the hole?
Express your answer with the appropriate units.
Value = Units =
Part B
How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?
Express your answer with the appropriate units.
Value = Units =
A) Express your answer with the appropriate units. Value = Units =
B) Express your answer with the appropriate units Value = Units =
C) Express your answer with the appropriate units. Value = Units =
*Please make sure you sepearate your answers so i will know which ones you are answering thank you*
Explanation / Answer
A) 9.0E-3 kg/cm^3 = 9.0E-3*10^6 = 9000 kg/m^3
B) 1 g/cm^3 = 1000 kg/m^3
2) a) v^2 = v0^2 + 2 a y
v = sqrt(13^2 -2*9.81*-10)=19.11 m/s
b) y = y0 + v0y t + 1/2 a t^2
-10 = 13*t - 0.5*9.81*t^2
t=3.27 s
3) a) x = 3*4^2 - 1*4 + 4 = 48 m
b) v = dx/dt = 9 t^2 - 1
so v = 9*4^2-1= 143 m/s
c) a = dv/dt = 18 t = 18*4 = 72 m/s^2