How much time should be allowed for a 650-mile car trip if the car will be traveling at an average speed of 55 miles per hour? a. 10.5 hours b. 11 hours c. 8.75 hours d. 9 hours

Time = (distance) / (speed)

If the car really truly covers the entire trip, end to end, at an average speed of 55 miles per hour, then the trip will take

Time = (650 mi) / (55 mi/hr)

Time = (650/55) hours

Time = 11.818 hours  which is not one of the choices.

But . . . . .

If 55 miles per hour is the moving speed of the car, then you have to allow a lot more than 11.818 hours for the trip.

-- No car can go 650 miles on one tank of gas.  You'll need to take some time to stop for gas.

-- No driver can drive for 11.818 hours straight without stopping.  You'll need to take some time to stop and overhaul the driver ... either give him some rest, or else let somebody else take over.

-- Nobody is going to be too happy about going 11.818 hours straight without something to eat and drink..  You'll need to take some time to stop, eat, and drink.

. . . which naturally leads to  ==>

-- Nobody can keep going for 11.818 hours straight without a pit stop.  You'll need to take some time to stop along the way at a convenient pit.  If you fail to plan for it in advance, then the pit you end up stopping at may not actually be a convenient one, but you'll stop and take some time anyway.

The original question was:  "How much time should be allowed . . . ?" .

In my 'umble opinion, and based on some experience, my personal advice would be: a MINIMUM of 13 hours, and even THAT's really stepping on it !

they start with the same

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.