Mass- Mass is measured in kilograms (kg).
Weight- Weight is measured in Newton’s.
Throw it sideways and try to make it spin around but it needs to be thrown high up then it should kinda glide down
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



Alright here the answer to number 2
The answer is most likely A