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-10 mph/sec

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โˆ™ 2010-05-20 16:14:34
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Algebra

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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

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Q: If an object goes from 60 mph to 10 mph in 5 seconds what is its acceleration?
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If an object goes from 50 mph to 30 mph in 5 seconds what is its acceleration?

-4 mph/sec (Study Island Answer)


If a roller coaster goes from zero to 80 miles per hour in 1.8 seconds what is its acceleration in miles per hour per second to the nearest tenth?

It goes from 0 mph to 80 mph in 1.8 seconds Acceleration = change in speed/time taken = (80 - 0)/1.8 mph per second = 44.4 mph per sec


Is it goes from 70 mph to 40 mph in 5 sec what is its acceleration?

-6 mph/s


A motorcycle accelerates from 0 mph to 60 mph north in 3 seconds what is the acceleration of the motorcycle?

20 mph/s North


If you went 0 to 55 mph in 6 seconds what would be your acceleration?

55/6 = 9.16666...mph/s


In 2 seconds at 30 mph what is distance in feet?

At 30 mph, an object travels about 102.66 feet in two seconds.


What is the final velocity of an object that starts at 45 mph and accelerates at a rate of -10 mphsec for 3 seconds?

the final velocity = initial velocity + acceleration x time; since acceleration is negative final velocity = 45 - 10x3 = 45 -30 = 15 mph


How long would it take a car to accelerate from 10 MPH to 75 MPH if its acceleration is 20 MPHs?

Acceleration = Change in speed/Time Time = Change in Speed/Acceleration = 65mph/20mph per s = 65/20 seconds = 3.25 seconds


If a car accelerates from 0 mph to 40 mph in 5 seconds What is the acceleration of the car in miles per hour per second?

8


How can velocity be positive while acceleration is negative for an object?

Answer This occurs when an object istraveling in one direction but has an acceleration in the opposite direction, which means it is decreasing in speed. For a given period of time, the speed has decreased. Acceleration is the change of velocity per second. T1 = 5 seconds V1 = 100mph T2 = 10 seconds V2= 50 mph Acceleration = (V2 - V1 ) / (T2 - T1) = (50-100)/(10-5) = -10 ft/sec/sec Positive(+) acceleration means an object will be going faster over an interval of time.


What is the average acceleration of a car that goes from rest to 60 mph in 8 seconds?

The car accelerates an average of 7.5 mph per second. It increases its speed 7.5 mph for every second that it accelerates. The car accelerated from zero to 60 mph in 8 seconds. If we wish to find out how fast it accelerated, we need to divide its acceleration (final speed minus initial speed) by the amount of time that it took to get going that fast. In this case, 60 divided by 8 equals the answer 7.5 mph/sec.


What is the fastest a jaguar can run?

really the Jaguar is built for acceleration and goes about 30 mph.

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