▼ Part A Constants How much time does it take the walker to make the round trip? Two piers, A and B, are located on a river: B is 1500 m downstream from A (Figure 1). Two friends must make round trips from pier A to pier B and return. One rows a boat at a constant speed of 4.00 km/h relative to the water; the other walks on the shore at a constant speed of 4.00 km/h. The velocity of the river is 2.80 km/h in the direction from A to Express your answer using two significant figures. min Submit Request Answer Figure 1 of 1 ▼ Part B How much time does it take the rower to make the round trip? Express your answer using two significant figures. 1500 m min U cunrent Submit Request Answer

5a. An airplane maintains a speed of 693 km/h relative to the air it is flying through as it makes a trip to a city 724 km away to the north. (Assume north is the positive y-direction and east is the positive x-direction.) What time interval is required for the trip if the plane flies through a headwind blowing at 32.4 km/h toward the south? h

uestion 1 of 6 arrent Attempt in Progress L25 1 2 The figure above shows particles 1 and 2, each of mass m, attached to the ends of a rigid massless rod of length L1+ L2, with L1 and L2 defined as shown. The rod is held horizontally on the fulcrum and then released. Note that L2 is greater than L1. NOTE: Express your answer in terms of the variables given, and g. (a) What is the magnitude of the initial acceleration of particle 1? 53°F DELL Mostly cloudy

On a hot summer day, a young girl swings on a rope above the local swimming hole (Figure 1). When she lets go of the rope her initial velocity is 2.10 m/s at an angle of 35.0 ° above the horizontal. You may want to review (Pages 99 - 101). Part A If she is in flight for 0.611 S, how high above the water was she when she let go of the rope? ? h = Im