PLEASE HELP! An object has a constant acceleration of 30 ft/sec2, an initial velocity of −10 ft/sec, and an initial position of
4 ft. Find the position function, s(t), describing the motion of the object.
1 answer:
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given:
$\therefore Ac=\frac{(2)2}{2}=2$
Answer:
20 mph and 4 mph
Step-by-step explanation:
GIVEN: A boat travels upstream for miles in
hours and returns in
hours traveling downstream in a river.
TO FIND: What is the rate of the boat in still water and the rate of the current.
SOLUTION:
Let the speed of boat in still water be and speed of current be
.
speed of water in upstream
speed of water in downstream
As
Solving both we get
Hence speed of boat in still water and rate of current is 20mph and 4mph respectively.