Answer the following questions
Remember:
position is equal to the velocity multiplied by tim...
Physics, 04.12.2020 21:10 nadiarose6366
Answer the following questions
Remember:
position is equal to the velocity multiplied by time plus the initial position (x = v*t + xi)
velocity is equal to the displacement divided by time
(v = x/t)
1) A person riding their bike on a nice cloudy day travels 50 meters in 20 seconds. How fast are they moving?
2) A car going down the road has a velocity of 20 m/s. If the car continues at this rate for 7 seconds how far did the car go?
3) A professional baseball player can throw the ball around 45 m/s if the distance between the pitcher and the batter is 18.39 m. How much time does it take for the ball to get to the batter?
4) The average NASCAR drive is moving at around 100 m/s. If the NASCAR track is roughly 850 m. How long does it take the NASCAR drivers to make a lap?
Answers: 2
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Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?
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