2. A student walks 3 blocks East, 2 blocks North, 1 block West, and then 2 blocks South.
a) What is the total distance traveled?

Two particles of masses m and 2m are placed on a smooth horizontal table. a string, which joins these two masses, hangs over the edge supporting a pulley, which suspends a particle of mass 3m.the pulley has negligible mass. the two parts of the string on the table are parallel and perpendicular to the edge of the table. the hanging parts of the string are vertical. find the acceleration of the particle of mass 3m.

How would doubling the made of an object change the objects potential energy

What is the final velocity of the initial velocity of 25 and -50?