Aball, which has a mass of 1.25 kg, is thrown straight up from the top of a building 225 meters tall with a velocity of 52.0 m/s. what will be the momentum of this ball just as it reaches the ground

First we will find the speed of the ball just before it will hit the floor

so in order to find the speed of the cart we will first use energy conservation

So by solving above equation we will have

now in order to find the momentum we can use

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.