Adoorknob makes it easier to twist a door latch in or out. how does a doorknob do this?
a.
by reducing the distance over which the input force is applied

b.
by decreasing the amount of input force needed to move the latch

c.
by increasing the amount of input force needed to move the latch

d.
by changing the direction of the input force

You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” the soy milk is most likely a

Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.

Acar traveling at 22 m/s starts to decelerate steadily. it comes to a complete stop in 15 seconds. what is it’s acceleration?