Find the average rate with which energy is transported along a cord by a mechanical wave of frequency f ff and amplitude A AA , if v v is the speed of the wave and μ μ is the mass per unit length of the cord. Express your answer in terms of the variables f ff , A AA , v vv , μ μmu , and appropriate constants.

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

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?