A train at a constant 490 km/h moves east for 33.0 min, then in a direction 500" east of due north for 21.0 min, and then west for 43.0 min. What are the (a) magnitude and (b) angle (relative to east) of its average velocity during this trip? (a) Number n Units v (b) Number Units V A boat is traveling upstream at 11 km/h with respect to the water of a river. The water is owing at 7.0 km/h with respect to the ground. What are the (a) magnitude and (b) direction of the boat's velocity with respect to the ground? A child on the boat walks from front to rear at 6.0 km/h with respect to the boat.What are the (c) magnitude and (d) direction of the child's velocity with respect to the ground? (a) Number n Units V lb) V (c) Number n Units V (d) V