Mass m = 0.1 kg moves to the right with speed v = 0.45 m/s and collides with an equal mass initially at rest. after this inelastic collision the system retains a fraction = 0.86 of its original kinetic energy. if the masses remain in contact for 0.01 secs while colliding, what is the average force in n between the masses during the collision?

An airplane travels from st. louis to portland, oregon in 4.33 hours. if the distance traveled is 2,742 kilometers. what is the airplane's average speed? - the airplane returns to st. louis by the same route. because the prevailing winds push the airplane along, the return trip takes only 3.75 hours. what is the average speed for this trip? - the airplane refuels in st. louis and continues on to boston. it travels at an average speed of 610 km/h. if the trip takes 3.75 hours. what is the flight distance between st. louis and boston?