2.
r represents the radius d the density, v the speed and the coefficient of
viscosity, then the quantity rdv/has the dimensions of
b. length
c. time
d. force

Aball is thrown upward in the air, and its height above the ground after t seconds is h ( t ) = 57 t − 16 t 2 feet. find the time t when the ball will be traveling upward at 14.25 feet per second.

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

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?