165 Answered Questions for the topic Speed

Speed Science

05/04/17

What is the answer?
To skate 100 meters in 20 seconds, a skater must skate at a speed of ____ . Please hurry!!!!
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Speed

03/28/17

With the sun directly​ overhead, an airplane takes off at a speed S of 221mph at an angle thetaθ of 19° above the horizontal.
How fast is the airplane's shadow moving along the runway ?
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02/13/17

If the speed is increased by 5 miles per hour, the trip would take one hour less time. What is the cars original speed?
A car travels for 100 miles at a uniform speed. If the speed is increased by 5 miles per hour, the trip would take one hour less time. What is the cars original speed?
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02/06/17

2 trains are traveling towards eachother, find the rate of each train.
Full question: a passenger train and a freight train start at the same time from stations which are 405 miles apart and travel towards eachother. The rate of the passenger train is twice the rate... more
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Speed Physics

11/16/16

Flowers and physics. speed.
A 4.5 kg flower pot sits precariously on a windowsill h1=31.9 meters above the ground. Your apartment is h2=14.6 meters above the ground, directly under the flower pot. If the flower pot falls past... more
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09/21/16

proportion
Nuala drives to her grandma’s. She drives at 20 miles per hour . The journey takes 50 minutes. How long would the journey take if if Nuala drove at 40 miles per hour?
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Speed

09/14/16

Speed question
The mile meter of a car misses every eleventh mile being traveled. After a certain time, the meter shows that 1251 miles were traveled. How many miles were actually traveled?
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07/09/16

Assume that wave A and B are examples of electromagnetic radiation and that the wavelength of B is twice that of A.
Which of the following statements is true?    1. Wave A is traveling at a greater speed than wave B through a vacuum 2. The wavelength of A is directly related to the photon energy associated... more
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06/01/16

What is the magnitude of the centripetal acceleration of the car as it goes around the curve?
A 2,000-kilogram car travels at a constant speed of 15 meters per second around a circular curve of radius 20 meters. What is the magnitude of the centripetal acceleration of the car as it goes... more
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06/01/16

What is the mass of the car?
A rollercoaster track provides 6400 N of centripetal force on a rollercoaster car. The car travels at a speed of 22 m/s as it rounds a horizontal curve with a radius of 15 m. What is the mass of... more
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06/01/16

Roller Coasters Accelerating
Are the following roller coasters accelerating? Yes or No? And explain why please. A roller coaster speeding up? A roller coaster speeding down? A roller coaster moving in a straight lin at... more
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Speed

05/31/16

AGAINST THE WIND
Against the wind a commercial airline in South America flew 728 miles in 4 hours. With a tailwind the return trip took 3.5 hours. What was the speed of the plane in still? air? What was the speed... more
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05/29/16

Physics Practice Problems
The following questions refer to a pop-up toy with a mass of 0.35 kg. The toy's spring compresses 0.04 m, and has a spring constant of 3,000 N/m.   How high does the pop-up toy go? What is the... more
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05/27/16

Speed Question
Joe and his dog Freddie are in a park with Joe standing 60 feet due south of Freddie. Freddie starts to run due east and without stopping or changing direction, catches a ball thrown to him by Joe.... more
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05/18/16

Period and speed of pendulum?
The period of motion for a pendulum is the amount of time it takes to swing from right to left and back to right again. The period is given by the equation , where T is the period and L is the... more
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05/18/16

Speed of launcher?
Dwight uses a spring (k = 40 N/m) on a horizontal surface to make a launcher for model cars. The spring is attached to a holder that has a mass of 0.5 kg. If he compresses the spring and releases... more
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Speed

05/10/16

Felipe is riding his bike. He rides 76.8 kilometers in 6 hours, What is his speed?
Felipe is riding his bike. He rides 76.8 kilometers in 6 hours.  What is his speed?
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Speed

05/09/16

New York to Denver is 1500 miles. The trip there took 6 hours and the trip back took 7.5 hours. What was the air and wind speed?
New York to Denver is 1500 miles. The trip there took 6 hours and the trip back took 7.5 hours.  What was the air and wind speed?
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Speed

05/02/16

How long a small hose can fill a pool compared to a larger one
Two hoses with different diameters can fill a swimming pool in 5 hours. If the larger hose alone fills it in 8 hours, how long would it take the smaller hose alone? Round to the nearest tenth.
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04/14/16

Physics question
Science question: If the car is started on a zero friction surface and zero air resistance but force of gravity acting upon it, Will it continue to travel at a constant speed even when engine is... more
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Speed

03/20/16

how fast do i need to go to cover 3m2 in 5 min
need help to calculate how fast i need to go to cover the area of 3m2 in 5 min
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03/17/16

What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?
1. A roller coaster has a mass of 500 kg and a radius of 9 m. What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?   a) 8.7 m/s b) 9.5... more
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03/17/16

The following questions refer to a pop-up toy with a mass of .35 kg. The toy’s spring compresses .04 m and has a spring constant of 4,500 N.
The following questions refer to a pop-up toy with a mass of .35 kg. The toy’s spring compresses .04 m and has a spring constant of 4,500 N.   1. What is the spring potential energy before the... more
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03/15/16

Force and Acceleration
A coaster has a mass of 800 kg and a radius of 5m. What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?May use:Fc = Fn +FgFc = MAcAc = v^2... more
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02/03/16

Who wins the race? By how much time?
Two children who are bored while waiting for their flight at the airport decide to race from other end of the 20m long moving sidewalk to the other & back.  Philippe runs on the sidewalk at... more
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