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Q: An in-line skater traveling in a straight line goes from 3ms to 9ms in 3 s. What is the acceleration?

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Calculate the difference in velocity, Then divide that by the time. The result will be the acceleration, in this case, in meters per second squared.

i dont know i asked that queston please help me!!!

The acceleration cannot be determined with this information. The beginning and ending velocity needs to be known. You can determine her average velocity, however. average velocity = displacement/time = (9mi - 3mi)/3s = 6m/3s = 2m/s

By creating friction.

Joey Mantia

The the skater is accelerating. Acceleration is the rate at which an object changes its velocity. Velocity is a measure of speed and vector (direction). Even though the skater is traveling at a constants speed, the skater is going in a circle around the rink so the direction is changing. Therefore the velocity is changing. Therefore the skater is accelerating.

Acceleration is change in velocity. These are vectors that have magnitude and direction. Changing either magnitude (speed) or direction will have the skater be accelerating. SO, if the skater is going at a constant speed of 2m/s in a straight line, he is not accelerating. If he is at a constant speed of 2m/s traveling in a circle (you gave the word "around"), he is accelerating. Going around in circles means there is a force constantly changing your direction. Obviously that force is coming from the skaters legs.

this depends completely on who he is sponsored by ..... the better the sponser the better the money :D

a = vf - vi = D v the answer is -11 km/hr/sec t t

The skater is going faster.The skater is traveling at 10 m/s (36 kph or 22.369 mph)compared with the cyclist that is traveling at 8 m/s (28.8 kph or 17.895 mph)200/25 = 8 m/s400/40 = 10 m/s

He is an entertainment photograher Shoot celebrities for studios. Kind of a staff photography for the studios. He was a gymnast and pro inline skater. NOT a pro skateboarder.

roller incline hockey is called street hockey.stake hockey is called ice hockey

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