Question
Questions 30-34 refer to colrions tetwen a car und trucks. Fur each descripios of a colisicn (30-34) helow, tiibties A hough J thx best Seseribes the forses between tse car and dse choose the one anewer feom the J th A The guck exerts a p D. The tack exertsatece o.de ea but the doesn't exenatree on F. Nex enouph indoematica is given to pick one of the arewersove B. The car exerts a greater C. d grrater amount of sonce on the car Dhan dhe cat exerts on the trucik amous! of foree us the tick than the truck exerts on the cu Neithe er esers a fonce on the other, the gets smasted simply becaase in is in the way of the truck e same amourt of force on the car as the cz exens on the truck. the track is much heavier 0 hey are boa moving a the same speod when they collide. 31 The car is movag much faser aan te hearer Tak when they collide which duece Which choice describes the torces descrièes te 32 The hemer truck standitg still when he clis it. Which tholce describes the forces? in quetions 33 and 34 she trek is .. rttall picup and is the same weighr as the 33. Both the truck and the cr re monng al te same speed when they colade witch choc aunbm the forces ne trucks standng sull uten the car hits it which change describes the tcrces? -34 Questions 35-38 refer to a large truck whoch breaks down out oa the road and receives a push back so town by a small compuci car Pick cae of the choices A areugh J below which correotly describes the forces between the ee and the trock for each of the descriptions (35-38 A·The force cf the car pushing against ne ruck is equal no thai of the truck pushing back apunt the car B. The force of the car pushing aganst che track is bess than that of the truck pushing bac'k against the car C. The force of the car pushing agains: the truck is greaer than that of the truck pushing back against the car D The car's engine is running so it applies a foroe as il pushes apainst the truck, bas the truck's engine isn' runating so it cant push back with a force aginst the car E Neither the car nor the truck exert any force on each oer. The uuck is pushed forward sitrely because it is in the way of the car J. Note of these descriptions is cocrecs. -_35 The car is pushing on the trick, bot not hard enough to make the trick move. The car, still pushing the truck is speeding up to get 1o enuising speed 37· The car, still pushing te trek, is at cruising speed and connaues to travel at the same speed 1 The cat, stll ushing the truck, is al cruising speed when the truck pts on its beakes and causes the eae to slow down rN3
Explanation / Answer
SOL-30 TO 34
According to 's third law of motion, the force exerted on compact car due to large truck is equal and opposite to the force exerted on large truck due to compact car. Hence, the force of impact is 'same on either vehicle'
From Third law it is clear that the force exerted is independent of mass and speed of collision
Hence option E : The truck exerts the same amount of force on the car as the car exerts on the truck. is correct for Que.30 to 34
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