A 620 gram basketball falls toward the ground from an initial height of 60 cm. The basketball hits the ground during a 137 ms time frame and the average normal force is found to be 33.4 N during
the time the basketball is in contact with the ground. How high will the basketball rebound?

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

One splits the atoms and molecules  the other combines them

Velocity is the speed of an object in a certain direction so you'd need to know speed and direction