A tow truck pulls a car 5.2 km along a horizontal roadway, Ask an Expert

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Q1. A tow truck pulls a car 5.2 km along a horizontal roadway using a cable having a tension of 790.

a)How much work does cable do on the car if it pulls horizontally?

b) How much work does cable do on the car if it pulls at 35.0^circ above the horizontal?

c) How much work does cable do on the tow truck if it pulls horizontally?

d) How much work does cable do on the tow truck if it pulls at 36.0^circ above the horizontal?

e) How much work does gravity do on the car in part A?

Q2. Two railroad cars, each of mass 6500kg and travelling 95km/h in opposite directions, collide head-on and come to rest. How much thermal energy is produced in this collision?

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