Answer: addition of electrons and hydrogen ions. loss of electrons and addition of hydrogen ions. loss of electrons and either addition or loss of hydrogen ions.
Particle is at rest when Velocity = 0
V = X ' ( t ) = 6t^2 - 42t + 72 = 0
V = t^2 - 7t + 12 = 0
Solve for t:t1 = 3t2 = 4Particle is at rest at t = 3 and t = 4.
Let <em>v</em> be the dog's initial velocity. Then
(13.5 m/s)^2 - <em>v</em> ^2 = 2 (1.50 m/s^2) (49.3 m)
==> <em>v</em> ^2 = (13.5 m/s)^2 - 2 (1.50 m/s^2) (49.3 m)
==> <em>v</em> = √((13.5 m/s)^2 - 2 (1.50 m/s^2) (49.3 m))
==> <em>v</em> ≈ 5.86 m/s
Hi there!
We can use the kinematic equation:
d = displacement (20 m)
v0 = initial velocity (dropped from rest, so 0 m/s)
t = time (s)
a = acceleration due to gravity (10 m/s²)
Rearrange the equation to solve for time:
Solve using the given values: