A block of mass M rests on a frictionless horizontal surface. An ideal string connected to the mass passes over a pulley in the shape of a disk with mass M and radius R, and is connected tto a hanging mass of value 2M. The system is released from rest. Please answer each of the following questions. a) 2M acceleration of the hanging mass? b) What is the velocity of the mass M, after it has travelled a distance d? c) What is the tension in the horizontal portion of the string?

What does the law of conservation of mass state?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)

How are elastic and inelastic collisions different? give two or more ways. your answer should have at least 2 sentences.