A50-g ball rolls across a table at 2 m/s. a 100-g ball rolls across the same table at 1 m/s. which ball has more momentum

50g * 2 m/s = 100 gm/s

100g * 1m/s = 100 gm/s.

They both have the same momentum.

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.