165 Answered Questions for the topic Speed

Speed

01/28/16

the sum of the speeds of two trains is 718.9 miles per hour. if the speed of the first train is 5.1 mph faster than the second train, find the speed of each
How fast is each train traveling
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01/27/16

What is the distance between the stations?
A light-rail train going from one station to the next on a straight section of a track accelerates from rest at 1.0 m/s^2 for 20 s. It then proceeds at constant speed for 2100 m before slowing down... more
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01/27/16

What is the train's acceleration after its wheel begins to stick?
A toy train is pushed forward and released at 2.0m with a speed of 0.5 m/s. It rolls at a steady speed for 2.0s, then one wheel begins to stick. The train comes to a stop at 5.0m from the point at... more
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01/27/16

With what speed would a person need to leave the ground?
Excellent human jumpers can leap straight up to a height of 1.1 m off the ground. To reach this height, with what speed would a person need to leave the ground? Assume no air resistance (free-fall... more
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01/27/16

What is her acceleration on the rough ice?
A speed skater moving across frictionless ice at 5.0m/s hits a 3.0-m-wide patch of rough ice, she slows steadily, then continues on at 3.7m/s. What is her acceleration on the rough ice? Use 2... more
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01/20/16

What is the magnitude of his displacement?
John walks 1.00 km north, then turns right and walks 1.00 km east.  His speed is 1.50 m/s during the entire stroll. a) What is the magnitude of his displacement, from beginning to end? b) If Jane... more
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01/20/16

If she measures a tie of 54s, is her speedometer accurate? If not, is the speed it shows too high or too low?
Shannon decides to check the accuracy of her speedometer.  She adjusts her speed to read exactly 70 mph on her speedometer and holds this steady, measuring the time between successive mile markers.... more
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01/20/16

What is the speed of advance of the glacier in m/s?
The end of Hubbard Glacier in Alaska advances by an average of 105 feet per year.  What is the speed of advance of the glacier in m/s?
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01/20/16

Estimate the average speed with which the hair on your head grows.
Estimate the average speed with which the hair on your head grows.  Give your answer in both m/s and μm/h.  Briefly describe how you arrived at the estimate.
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01/20/16

Please help me answer questions (a and b) relating physics.
- Speed by itself does not produce thrills. Living on Earth, you already have a big speed, since Earth is constantly turning. a) Earth makes a complete revolution once every 24 h. La Paz, Bolivia... more
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01/19/16

How far from and on which side of Okemos road did it start?
A car travels along a straight north-south road. A coordinate system is established on the road, with x increasing to the north. The car ends up 14 mi south of the intersection with Okemos Road. If... more
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01/06/16

A projectile is launched horizontally with the speed of 80 m/s. If the projectile is launched 1.5 m above the floor how long does it take the projectile.....
....to hit the floor?   Test tomorrow and I'm not sure on how to work out the equations. Any help would be appreciated. Thanks!
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12/02/15

How does the speed of the carts after the collision compare with the initial speed of the moving cart?
One cart hits and sticks to a second cart. Make a diagram showing the carts before and after the collision. How does the speed of the carts after the collision compare with the initial speed of the... more
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11/28/15

Describe the collision between two vehicles of very different masses moving toward each other at equal speeds.
Describe the collision between two vehicles of very different masses moving toward each other at equal speeds in physics terms.
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11/18/15

What is the car's stopping distance if the speed is doubled?
A car traveling at 10 m/s hits the brakes and comes to a stop in 12 m. What is the car's stopping distance if the speed is doubled?
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Speed Distance Km

11/14/15

Joe took 12 minutes to drive 9 km. At this speed, how many km could he drive in 3 hours?
I would like to know the simplest way to work this out step by step :)
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Speed

11/11/15

If a bus traveled 1 mile in 75 seconds what was its speed in miles per hour
I nees to know how fa the bus travels if it went 1 mile in 75 seconds  I need to know the speed in miles per hour
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Speed Physics Force

11/07/15

How far will the faster egg travel once it hits the blanket as compared to how far the slower egg travels when it hits the blanket?
Two eggs are thrown at a blanket. One egg is thrown at twice the speed of the other. If you assume that in both cases the force exerted by the blanket on the egg is the same, how far will the... more
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11/05/15

Please help me with the following mathematical questions.
1) I did time=distance/speed. my sum was 170/35=time. My answer was 4.85714. How do i show that in hours and the nearest minute?   2) Again, i used the same formula for another question and... more
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11/01/15

What was the cannonball's final speed when it hit the soldier?
If a cannonball was shot off 20 meters away from a soldier, and it's acceleration was 5m/s^2. What was the cannonball's final speed when it hit the soldier?   Hint: The Initial speed was... more
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10/27/15

How long does it take (in minutes) for light to reach Venus from the Sun, a distance of 1.184 × 108 km?
How long does it take (in minutes) for light to reach Venus from the Sun, a distance of 1.184 × 108 km?   Light travels at 2.998 × 108 m/s through space. Using this value, determine how long it... more
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10/22/15

Renaud Lavillenie broke the world record for the highest pole vault at 6.16 meters(!) in 2014. What was his running speed before planting the pole?
Renaud Lavillenie broke the world record for the highest pole vault at 6.16 meters(!) in 2014. What was his running speed before planting the pole?   Show work please.
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10/11/15

Vectors, Speed, and Constant Acceleration.
A rocket blasts off and moves straight upward from the launch pad with constant acceleration. After 3.0 seconds the rocket is at a height of 77 meters. (a) What are the magnitude and direction of... more
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10/05/15

Which of the following carts is experiencing an unbalanced force?
Which of the following carts is experiencing an unbalanced force?   Multiple Choice: A) A cart that is accelerating B) A cart that is traveling at a constant speed C) A cart that is at... more
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09/26/15

Algebra II Problem, involving calculating distance.
Problem: A stone is dropped into a deep, well. You don't see the stone hit the water, but you hear it splash 4 seconds after it's dropped. What is the distance from the top of the well to the... more
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