There is 1/4 chance of picking a green marble from a bag. IF there are 20 total marbles in the bag, how many marbles must be green?

Ineed no it anyone can see this

The volume of the a sphere whoes diameter is 18 cm is cubic cm . if it's diameter were reduced by half, it's volume would be of its original volume

A0.40 kg soccer ball is kicked so that its incoming velocity of 5 m/s is changed to an outgoing velocity of -25 m/s. what impulse does the player apply to the ball?