A basketball player is shooting a free throw. She applies a resultant force of 60N to a 0.5kg basketball at a 45 degree angle from the horizontal as it leaves her hands. We will assume the vertical and rightward is regarded as positive. What is the net force acting on the basketball as it leaves her hands?

i don’t know what the answer is i wish i

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

i think it would be 5

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.