Two motorcycles are traveling due east with different velocities. However, 5.70 seconds later, they have the same velocity. During this 5.70 -second interval, motorcycle A has an average acceleration of 2.53 m/s2 due east, while motorcycle B has an average acceleration of 19.0 m/s2 due east. (a) By how much did the speeds differ at the beginning of the 5.70 -second interval, and (b) which motorcycle was moving faster?