Spike daims that dimensional analysis shows that the correct expression for change in velocity, ange in velocity, vy . v," is vy-v, =ー, where m is , s where mis Spike claims that dimensional analysis shows that the correct expression for ch ML mass, t is time, and F is the magnitude of force. Carla says that can't be true because the dimensions of force are l \ 1 which one, if either, is correct?

Alkaline earth metals are found in group 2 of the periodic table.

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j

//(b) both involve the use of levers;