I have the physics question, and I'm really stuck,
2.) A car leaves point A and drives at 80 km/h[E] for 1.5 h. It then heads north at 60 km/h, and finally, it heads [N 30 degrees W] at 100km/h for 0.5h, arriving at point B.
I calculated the displacement from point A to B. It's 140 km [N 43 degrees E], approximately. There's another part of the question, however, and I'm really stuck.
a.) A plane flies directly from point A to B, leaving two hours after the car has departed from point A. It arrives at point B at the same time as the car. There is a wind blowing at 60 km/h due south for the entire trip. What is the plane's airspeed?
I have no idea how to go about solving this part. Could someone show me, or even just explain it so I understand and can do it myself? I have a big test coming up. According to my teacher, who won't explain HOW to do it, the answer is 143.3km/h [E 60 degrees N]
2.) A car leaves point A and drives at 80 km/h[E] for 1.5 h. It then heads north at 60 km/h, and finally, it heads [N 30 degrees W] at 100km/h for 0.5h, arriving at point B.
I calculated the displacement from point A to B. It's 140 km [N 43 degrees E], approximately. There's another part of the question, however, and I'm really stuck.
a.) A plane flies directly from point A to B, leaving two hours after the car has departed from point A. It arrives at point B at the same time as the car. There is a wind blowing at 60 km/h due south for the entire trip. What is the plane's airspeed?
I have no idea how to go about solving this part. Could someone show me, or even just explain it so I understand and can do it myself? I have a big test coming up. According to my teacher, who won't explain HOW to do it, the answer is 143.3km/h [E 60 degrees N]