214 Answered Questions for the topic Velocity

Velocity Physics

04/03/17

Assume that the backwards running marathon record is 3h 53min 17s.
Determine the average of this 42.2km race. Express your answe in both m/s and km/h.   ans.(3m/s, 10.9km/h)
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Velocity

03/29/17

two balls are dropped at the same time, one window is 40 feet high and the other is 80 feet high. What is the height of the ball when the other hits the ground
h=-16t2+vt+s
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03/24/17

The ball was 3 feet off the ground when she struck it with an initial upward velocity of 24 feet per sec. The equation I have to use is h=-16t^2+vt+h(sub zero)
How do I graph this my x scale has to go by .25 so what is my y coordinates(h vs t)(h-x vs t-y) i also need to know what the equation for this problem would be
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03/21/17

Period, Frequency, Wavelength and Velocity
James is lying on his body board out in the surf. 12 waves pass him every minute. These waves are about 14m apart from one crest to the next and they rise 2 meters above the normal water level. a)... more
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02/14/17

Finding velocity after a collision
On a very wet and slippery rugby field a 120 kg halfback tackles a 90 kg second rower. Prior to the collision the halfback is slipping with a velocity of 5.6m/s south and the second rower is... more
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02/14/17

Calculating impulse
A car of 1 tonne travels at a speed of 100km/h collides with a 3 tonne van travelling 20km/h in the same direction. After the collision the car rebounds at 20km/h. Calculate the impulse on the van. 
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02/14/17

Calculate velocity and acceleration during collisions.
A small car of mass 500kg is travelling at 120km/h when it hits stationary truck (of 1.5 tonne mass) head on. The small car rebounds and travels in the opposite direction at 40km/h. The collision... more
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02/14/17

Calculating momentum, velocity, impulse and force.
A car (m=900kg) travelling at 70km/h hits a pedestrian (m=60kg) who is travelling at 1m/s in the same direction. After the collision the car has a velocity of 30km/h in the same direction it was... more
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Velocity

01/29/17

ME = 12mv^2 + mgh
The total mechanical energy of an object with mass mm at height hh in a closed system can be written as ME = 12mv2 + mghME = 12mv^2 + mgh. Solve for v, the velocity of the object, in terms of the... more
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Velocity Math Science

01/23/17

A sail boat is traveling north at 10 km/h, relative to the water. The water is flowing north at 5 km/h. What is the velocity of the boat to the ground?
A sail boat is traveling north at 10 km/h, relative to the water. The water is flowing north at 5 km/h. What is the velocity of the boat to the ground? What is the equation needed???
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01/23/17

John took 45 minutes to bicycle to his grandmother's house, a total of 4 kilometers. What was his velocity in km/h?
This is a science/math problem. I'm pretty sure I have to convert the minutes to hours, but I don't know what to do with the kilometers then. I need clarification and steps to show me what I need... more
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Velocity

12/13/16

A projectile is fired vertically with an initial velocity of 560 feet per second. The distance S in the feet above the ground after T seconds is given
A projectile is fired vertically with an initial velocity of 560 feet per second. The distance s in feet above the ground after t seconds is given by the equation s=−16t^2+560t. For what range of... more
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Velocity Physics

12/07/16

How fast is Anissa going after 7 seconds when starting at rest?
Anissa rides her snowboard down a hill sloped at 25 degrees. The coefficient of kinetic friction between her snowboard and the snow is 0.15. If Anissa's mass is 55 kg, how fast is she going 7... more
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Velocity Math Help

11/10/16

The kinetic energy of a thrown Nerf football is 25 Joules. If the mass is 2 kg, what is the velocity?
Solving for velocity.
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Velocity Differentiation

11/09/16

Velocity of balls
Two balls start at the same instant and move slowly along the same straight line. The first and second balls have a displacement of B1 and B2 metres resp.    What time will they have the same... more
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10/14/16

Train velocity problems
a train is starting from rest moving with uniform velocity 3ms-1 after the max. velocity with retardation of 2ms-1 it came to rest time of journey 1m. find total distance travel by train ?
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Velocity Physics Projectile

09/25/16

Physics Projectile Motion
Question: A landscape architect is planning an artificial waterfall in a city park. Water flowing at 1.75 m/s will leave the end of a horizontal channel at the top of a vertical wall h = 3.35 m... more
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Velocity Physics

09/23/16

Relative velocity train problems
A train starting from rest from a platform passes a pole the front part of the train crosses the pole with a velocity u and the real part of the train cross the pole with a velocity v. What is the... more
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05/29/16

Acceleration, Safe or Not?
At the bottom of the loop of your roller coaster, the velocity is 30 m/s and the radius of the loop is 50 m. Is the amount of acceleration riders will experience in this loop considered safe? Why?... more
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Velocity Math Algebra 2 Speed

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

Spring Constant? Velocity?
Lincoln goes bungee jumping. He has a mass of 102 kg.a. After his jump, Lincoln hangs from the cord motionless, with the cord stretched by 15 m. What is the spring constant of the bungee cord?b. At... more
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05/18/16

Velocity of the canoe?
Blake stands in a canoe in the middle of a lake. The canoe is stationary. Blake holds an anchor with mass 15 kg, then throws it west with a speed of 8 m/s. Blake has a mass of 115 kg and the canoe... more
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03/16/16

PHYSICS: Minimum Velocity
What is the minimum velocity required of a roller coaster at the top of a vertical loop with a radius of 7 m?   SHOW ALL WORK PLEASE. May use if needed: Fc = Fn + Fg Fc = MAc Ac = v^2/r
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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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Velocity

03/07/16

velocity vs distance
For an object whose velocity in ft/sec is given by v(t) = sin(t), what is its distance, in feet, travelled on the interval t = 1 to t = 5?  0.45 0.26 2.82 0.03
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