Why is the atmospheric pressure lower on a high mountain peak than at sea level?
a. the temperature is considerably lower.
b. the air humidity is increased at the peak.
c. the moon's force of gravity has a greater influence.
d. the air column above the peak is shorter.

A110-pound person pulls herself up 4.0 feet. this took her 2.5 seconds. how much power was developed? 0.13 hp 0.32 hp 2.0 hp 3.1 hp

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

Aparticle initially located at the origin has an acceleration of = 2.00ĵ m/s2 and an initial velocity of i = 8.00î m/s. find (a) the vector position of the particle at any time t (where t is measured in seconds), (b) the velocity of the particle at any time t, (c) the position of the particle at t = 7.00 s, and (d) the speed of the particle at t = 7.00