Which of the following is the most accurate description of the relationship between velocity and acceleration? Velocity and acceleration are the same thing.

Velocity is a type of acceleration.

Acceleration is a change in velocity.

Acceleration is positive and velocity is negative.

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)

Derive the formula 2as=v² -u² where the formula have have usual meanings