Which of the following statements about two carts rolling on a track and experiencing a completely inelastic collision is TRUE?

a. The kinetic energy of the system is conserved to good approximation.

b. The momentum of the system is conserved to good approximation.

c. The sum of the velocities of the two carts just before and just after the collision is approximately the same.

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

Asher cycles 12 miles in 16 hours. what is his speed?

Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)