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.

answer

6000 N

explanation

every force has an equal and opposite reaction force, so the force exerted by the truck on the car is the same as the force exerted by the car on truck

the force is 6000 N

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2