Wednesday

August 20, 2014

August 20, 2014

Posted by **Aletha** on Sunday, March 18, 2007 at 8:40pm.

D(t)= 10t + (5)/(1+t) - 5

where D(t) is measured in meters.

a) derive a formula for the velocity of the car.

b) how fast is the car moving at 6 hours?

c) derive a formula for the car's acceleration.

I'm sorry bobpursley-I just wanted to ask you about part b; I got .102 m. Is this wrong or right; because it sounds wrong. I plugged 6 into the first derivative of the original function and then found part c with the 2 derivative. Is this correct?

Thank You.

Of course it is wrong, your part a (the velocity) was wrong.

I hope you used the correct first derivative to get the second.

**Related Questions**

Calculus - Posted by Aletha on Sunday, March 18, 2007 at 6:51pm. After t hours ...

Calculus - After t hours of an 8-hour trip the distance a car travels is modeled...

Calculus - The velocity of a car (in miles per hour) is given by v(t) = 61.25t...

math - The distance an automobile can travel in h hours at an average rate of 50...

math - The distance an automobile can travel in h hours at an average rate of 50...

Maths - the distance, s metres, traveled by a car in t seconds after the brakes ...

math help!! - A boat travels down the river in 2.9 hours. The return trip up ...

help math - A boat travels down the river in 3.0 hours. The return trip up river...

help mathhh!!! - A boat travels down the river in 2.3 hours. The return trip up ...

algebra - A car travels down the highway at speeds between 50 miles per hour and...