165 Answered Questions for the topic Speed

12/03/14

find the speed of the plane in still air?
A plane flies 390 miles with the wind and 325 miles against the wind in the same length of time. If the speed of the wind is 10mph find the speed of the plane in still air?
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Speed Miles

12/02/14

what is the speed of car1 and car2?
car 1 travels 162 miles in the same time that car 2 travels 120 miles. If the speed of car 1 is 14 miles per hour faster than the speed of car 2, what is the speed of both cars?
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Speed

12/02/14

What is the speed of a river?
A paddle boat can move at a speed of 12 km/h in still water. The boat is paddled 6 km downstream in a river in the same time it takes to go 3 km upstream. What is the speed of the river?
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Speed Forces Thrust

10/15/14

Thrust from a stationary mounting
If a propeller, on a stationary mounting, blows back 36kg of air per second at a speed of 45 knots, what thrust does it produce?
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Speed Physics

10/14/14

Roller coaster speed
A 100kg roller coaster cart starts from rest atop a 60 meter tall hill and rolls down.What is the speed of the coaster at the bottom of the hill if there is no friction?What is the speed if there... more
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Speed Time Distance

10/14/14

distance,speed , time math question.
A car travelling on a straight road at a constant speed of 54km/h, takes 20 seconds to travel the distance between two sign post. Calculate a) the speed of the car in m/s.                b)The... more
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10/13/14

Deceleration and length
Assuming that the maximum deceleration of a car when full braking is applied is 0.8g, find the length of run required to pull up from a) 50 km/h b) 100km/h
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Speed Acceleration

10/13/14

Speed and acceleration
A boy on a bicycle is going downhill at 16km/h.  If his brakes fail and he accelerated at 0.3m/s2, what speed will he attain if the hill is 400m long?
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09/21/14

How long did it take Alison to overtake Alex?
Exactly 20 minutes after Alex left home, his sister Alison set out to overtake him. Alex drove at 48 mph and Alison drove at 54 mph. How long did it take Alison to overtake Alex?
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Speed Physics

09/16/14

Physics and average speed.
A car travels 100 km in the first two hours, stops for half an hour and then travels 200 km in the next four hours. Find the average speed of the car.
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Speed

07/25/14

if I run 2 miles, I start at 10a.m and finish at 11:12 . how many miles per hour was i going?
I want to know how many miles per minute i was going
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Speed

07/10/14

How fast was the stream flowing?
A girl is swimming downstream. In still water she can swim at 2km/h and the river is flowing with her. She covered a distance of 12km in 2h 24min. How fast was the stream flowing?   a.... more
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Speed

07/04/14

speed c/o physical science
1.  a car is traveling north on a road at a speed of 10 meters per second.  it hits from behind another car which is at rest and the two cars stick together.  what can be concluded from this... more
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Speed

07/01/14

help with speed c/o physical science
a flower pot weighing 1 kilogram is accidentally knocked off the window ledge of the top floor apartment in a tall building.    what will be the speed of the flowerpot at the end of 5... more
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Speed

06/10/14

Please answer the question that's in the description box it was a lot and didn't allow more
A turtle and a rabbit are in a race to see who is first to reach a point 100 feet away. The turtle travels at a constant speed of 20 feet per minute for the entire 100 feet. The rabbit travels at a... more
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