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What is the acceleration of a car that slows down from 60 ms to 40 m s during a period of 10 seconds?
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∙ 14y ago
-2 m/s^2
Wiki User
∙ 14y ago
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It takes a motor boat 3 hours to make a downstream trip with a current of 7 miles per hour the return trip against the same current took 5 hours find the speed of the boat in still water?
Since the distance downstream (with the current) equals the distance upstream (against the current), and if we: Let B stand for the speed (rate in mph) of the boat in still water, and using the formula rate X time = distance, the equation will be: (B+7) x 3 = (B-7) x 5 3B + 21 = 5B - 35 56 = 2B B = 28 mph Traveling downstream, the current will cause the boat to go faster so the 7 mph current is added to the boat's still water speed. Traveling upsteam the current slows or decreases the boat's rate so the current's speed is subtracted from the boat's still water speed.
How do you operate a hi tec burning log turbo 10 fire?
If it is the older style with a long rather than wide firebox, and tiles along the side, then the following should get you started. It may also be relevant to later models ... The lever above the door that moves sideways controls the damper at the rear of the firebox, which has to be to the right (opens the damper and moves an interlock metal tab to the right) to allow the door to be opened. The small lever at the top front on the right hand side sets the air intake in 3 steps, to the rear for maximum air, to the front for minimum. When the damper opens the interlock mentioned above should pop the intake lever back to maximum. I have experienced 2 well used units, and the damper lever linkages on both have been in bad shape. This means to close the damper (lever to left) properly may require a bit of technique, see below. To start, damper lever to right, open door; my technique is to feed in plenty of screwed up paper, then a layer of twigs or kindling, then a couple of decent bits of timber on top. At the very last, a few screwed up sheets of newspaper at the very front filling up the door, gets everything happening fast. Light this newspaper in a couple of places, then immediately almost fully close the door, leaving it ajar about 3cms of so. The fire should take off like a rocket; move the door in or out to adjust how ferocious it is. What you want is for the chimney at the base to get pretty hot, and to see that decent pieces of timber are well and truly burning. Then close the door properly, using the lever; don't over-tighten as the catch is a bit flimsy and will bend if you overdo it. At this point the damper is open, air intake is maximum. As soon as the fire appears to be really stable close the damper, which may need some fiddling -- to do this, move the lever to the left, then slide the interlock tab with your finger to the left, then move the lever again to the left with a bit of a jerk. When the damper closes properly it will make a bit of a clang; if your unit has this problem you'll probably have to experiment a bit to get the technique right. If the fire dies down at this point you've been too eager to close the damper: damper lever to right, open the door a touch to get it going once more, and try again. With the damper closed the wood is being burnt in the most efficient way, giving off the most heat for the wood used; the only thing to worry about then is the air intake. Lever to the back for maximum heat, towards the front slows the burning rate, and if you fill the firebox last thing at night the front setting should give you a still usable fire in the morning! Depending upon the type of wood burning and the air intake setting, you need to be careful opening the door: do it too quickly and you will have smoke pouring out into the room! Only open it a few cms or so initially, and leave the fire to stabilise a bit before opening further. This is also the way to get the fire going again if it suffocates (firebox fills with smoke) Good luck! Frank
A car slows to a stop in 5 seconds if it was going 80 kilometers an hour what was its acceleration?
You can't figure "acceleration" from this information. Maybe you meant "Deceleration"? Ask again.
A motorcycle slows down from 40ms to 20ms. if this takes 4 seconds what is the motorcycles acceleration?
-5 m/s² (APEX)
If your speed slows down you will have what acceleration?
If your speed slows down, yYou will have negative acceleration or deceleration.
What is the acceleration of a car that slows down from 60 meters per second to 40 meters per second during a period of 10 seconds?
The car's speed decreases by 60 - 40 = 20 mps in 10 seconds. It's average acceleration is -20/10 = -2 mps/ps. The acceleration is negative as the car is slowing down. The formula for this situation is v = u + ft where v is the final velocity (40), u is the initial velocity (60), t is the time period (10) and f is the acceleration. Then, 40 = 60 + 10f : 10f = 40 - 60 = -20 : f = -20/10 = -2.
A motorcycle slows down from 40 ms to 20 ms If this takes 4 seconds what is the motorcycle's acceleration?
Acceleration(a) = [final velocity(v) - initial velocity(u)] / time(s) Algebrtaically a = [ v - u ] / s A negative result indicates deceleration a = [20 - 40 ]= / 4 a = [-20] / 4 a = -5 m/s^(2) This is negative which matches the question of slowing down/deceleration.
When skydiver slows down from 54 meters to 4 meters by opening his parachute If this takes 0.75 seconds what is the magnitude of the skydiver's acceleration?
the magnitude of the skydivers acceleration is zero as he is decelerating by opening his parachute!
When an object slows it has what acceleration?
Retardation or negative acceleration or deceleration.
When an object slows down it has what acceleration?
Retardation or negative acceleration or deceleration.
What type of acceleration is it when a car slows down?
Deaccelration.
When an object slows down it has no acceleration?
When an object slows down it is still accelerating.
If a car traveling at 30meters per second slows to a stop in 15 seconds what was the cars acceleration?
(change in velocity)/(change in time)=avg. acceleration (-30 m/s)/(15s)= -2 m/s2
What A skydiver slows down from 54 ms to 4 ms by opening his parachute this change takes 0.75 what is the skydiver acceleration?
If the 0.75 refers to seconds, then his acceleration is -66.66... (repeating) metres per second^2.
