The working of a spring is given by:
Entering the unknowns, we have:
If you notice any mistake in my english, please let me know, because i am not native.
Wow I have no idea kid............
The stings vibrates around the air which makes a longitudinal wave
Answer:
W
Explanation:
its high in mass object and volume object
The vertical position of the rock is given by:
where
h=75 m is the initial height
v0=20 m/s is the initial vertical velocity
g=9.81 m/s^2 is the acceleration due to gravity
The problem asks to find the time t at which the rock hits the ground, so the time t at which y(t)=0, so the equation above becomes:
Which has two solutions:
t=-2.37 s
t=6.45 s
The first solution is a negative time so it has no physical meaning, therefore the correct answer is t=6.45 s.
