A truck is using a hook to tow a car whose mass is one quarter that of the truck

Question

A truck is using a hook to tow a car whose mass is one quarter that of the truck. If the force exerted by the truck on the car is 6000 N, then the force exerted by the car on the truck is A) 1500 N. B) 24000 N. C) 6000 N. D) 12000 N. E) We need to know if the car is accelerating to answer this question. 24)You are standing in a moving bus, facing forward, when you suddenly slide forward as the bus comes to an immediate stop. What force caused you to slide forward? A) gravity B) the normal force due to contact with the floor of the bus C) the force due to friction between you and the floor of the bus D) There is not a force causing you to slide forward. 25) A person is using a rope to lower a 5.0-N bucket Into a well with a constant speed of 2.0 m/s. What is the magnitude of the force exerted by the rope on the bucket? A) 0.00 N B) 2.0 N C) 5.0 N D) 10 N E) 49 N 26) A person who normally weighs 700 N is riding in a rather swift elevator that is moving at a constant speed of 9 8 m/s. If this person is standing on a bathroom scale inside the elevator, what would the scale read? A) more than 700 N B) less than 700 N C) 700 N D) It could be more or less than 700 N, depending on whether the elevator is going up or down. 27) A 75-N box rests on a perfectly smooth horizontal surface. The minimum force need to start the box moving is A) 75 N. B) 7.5 N. C) 750 N. D) any horizontal force greater than zero. 28) Two small balls, A and B, attract each other gravitationally with a force of magnitude F, if we now double both masses and the separation of the balls, what will now be the magnitude of the attractive force on each one? A) 16F B)8F C) 4F D) F E) F/4

Explanation / Answer

23)   Force exerted by car on the truck is   6000 N

    =>   option C) is correct .

24)    There is not a force causing you to slide forward .

=>   option D) is correct .

25)   magnitude of force exerted by rope on the bucket -    5 N

=> option C) is correct .

26)   The scale read -   700 N

=>   option C) is correct .

27) Minimum force needed to start the box moving - any horizontal force greater than zero .

=>   option D) is correct .

28) magnitude of attractive force on each>

=>   option D) is correct .

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