Solve the problem.An explosion causes debris to rise vertically with an initial velocity of 64 feet per second. The function 
describes the height of the debris above the ground, s(t), in feet, t seconds after the explosion. What is the instantaneous speed of the debris 0.7 second(s) after the explosion?
A. -41.6 ft/sec
B. 41.6 ft/sec
C. 22.4 ft/sec
D. -22.4 ft/sec
Answer: B
You might also like to view...
Solve the equation.
= x - 3
A. 1, 13 B. 1, 6 C. 6 D. 6, 13
For the following equation, graph y = f1(x) and y = f2(x) on the same screen on your calculator. From the graphs, make a conjecture as to whether the equation is an identity. If so, prove your conjecture.cos 2x = sin 2x tan x
What will be an ideal response?
Solve.A number decreased by 7 is 10. Find the number.
A. -3 B. -17 C. 3 D. 17
Solve the problem.A cup of coffee is heated to 194° and is then allowed to cool in a room whose air temperature is 
After 11 minutes, the temperature of the cup of coffee is 
Find the time needed for the coffee to cool to a temperature of 102°. Assume the cooling follows Newton's Law of Cooling: U = T + (Uo - T)ekt.(Round your answer to one decimal place.)
A. 15.1 minutes B. 29.7 minutes C. 41.1 minutes D. 26.4 minutes