Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 0.8 m/s and a mass of 0.39 kg. Cart 2 has a mass of 0.64 kg. (a) If the total momentum of the system is to be zero, what is the initial speed (in m/s) of Cart 2? (Enter a number.) m/s (b) Does it follow that the kinetic energy of the system is also zero since the momentum of the system is zero? O Yes O No (c) Determine the system's kinetic energy (in J) in order to substantiate your answer to part (b). (Enter a number.)

Two rolling carts are moving toward each other at the same constant speed of 10m/s. Cart 1 travels to the right with a mass m1 = 0.2kg and while Cart 2 travels to the left with a mass m2 = 0.4kg. Momentum p→ is a vector defined as p→=mv→. Draw a momentum vector for each cart.

(a)A bullet with a mass of 2.00 g moves at a speed of 1.50 ✕ 103 m/s. If a baseball of mass 142 g has the same momentum as the bullet, what is its speed (in m/s)?  m/s (b)Which has greater kinetic energy, the ball or the bullet? The bullet has greater kinetic energy.The ball has greater kinetic energy.    Both have the same kinetic energy

Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 0.9 m/s and a mass of 0.53 kg. Cart 2 has a mass of 0.75 kg. (a) If the total momentum of the system is to be zero, what is the initial speed (in m/s) of Cart 2? (Enter a number.) ?m/s (b) Does it follow that the kinetic energy of the system is also zero since the momentum of the system is zero? Yes or No     (c) Determine the system's kinetic energy (in J) in order to substantiate your answer to part (b). (Enter a number.) J

Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 1.0 m/s and a mass of 0.52 kg. Cart 2 has a mass of 0.73 kg. (NEED HELP WITH PARTS A+C)   (a) If the total momentum of the system is to be zero, what is the initial speed of Cart 2 in meters per second?   (b) Does it follow that the kinetic energy of the system is also zero since the momentum of the system is zero?   (ALREADY SOLVED - No it doesn't)   (c) Determine the system's kinetic energy in joules in order to substantiate your answer to part (b).