a student releases a marble from the top of a ramp. the marble increases speed steadily and travels 120cm in 2.70s. what is the marbles final speed?

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.