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26 Nov 2019
A car is driving north on the freeway at a speed of 110 km/h and atruck is leaving the freeway driving 85 km/h in a direction that is35 dregrees west of north. What is the velocity of the truckrelative to the car?
A dolphin wants to swim directly back to its home bay, which is0.80 km due west. It can swim at a speed of 4.00 m/s relative tothe water, but a uniform water current flows with speed 2.83 m/s inthe southeast direction. (a) What direction should the dolphinhead? (b) How long does it take the dolphin to swim the 0.80-kmdistance home?
A car is driving north on the freeway at a speed of 110 km/h and atruck is leaving the freeway driving 85 km/h in a direction that is35 dregrees west of north. What is the velocity of the truckrelative to the car?
A dolphin wants to swim directly back to its home bay, which is0.80 km due west. It can swim at a speed of 4.00 m/s relative tothe water, but a uniform water current flows with speed 2.83 m/s inthe southeast direction. (a) What direction should the dolphinhead? (b) How long does it take the dolphin to swim the 0.80-kmdistance home?
Bunny GreenfelderLv2
17 Jun 2019
