It is observed that the skier leaves the ramp A at an angle 0= 25 with the horizontal. If he strikes the ground at B, determine d. Radius of curvature at A e. Radius of curvature at B
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It is observed that the skier leaves the ramp A at an angle 0= 25 with the horizontal. If he strikes the ground at B, determine
d. Radius of curvature at A
e. Radius of curvature at B
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- 14If you throw a ball with an initial horizontal velocity of 20 m/s and an initial vertical velocity of 40 m/s. a. What will be the vertical displacement after 3 seconds? b. What will be the horizontal displacement after 3 seconds? c. What will be the vertical velocity after 3 seconds? d. What will be the horizontal velocity after 3 seconds?17. For a projectile, the y-axis motion occurs as a result of the gravitational action on the projectile and this gives way to its fall toward the Earth in parabolic motion. a. True b. False 18. The sum of two or more vectors is called a complementary vector a. True b. False
- A hawk flies in a horizontal arc of radius 15.2 m at a constant speed of 5.4 m/s. Find its centripetal acceleration. Answer in units of m/s 2 . It continues to fly along the same horizontal arc but increases its speed at the rate of 1.61 m/s 2. Find the magnitude of acceleration under these new conditions. Answer in units of m/s2ASAPImagine a CD with an outer radius of 12 mm and an inner radius of 2 mm. A speck of dust on the outer edge completes a full revolution in 0.5 seconds. A speck of glitter on the inner edge completes a full revolution in 0.2 seconds. a) What is the centripetal acceleration of the dust in m/s2? b) What is the centripetal acceleration of the glitter in m/s2?
- A car on a highway is heading toward a cloverleaf interchange with a circular curvature or Radius=50 m, traveling at a steady speed of 14m/s. A) determine the position and velocity of the vehicle at points A and B. B) determine the vector components and direction of the average acceleration during the trip from a to b. Include a sketch of the vector showing it's orientation. SPeciffy the direction between -180 degrees and 180 degrees as measured from the +x axis.A ball is thrown horizontally from the top of a 71.0 m building and lands 73.0m from the base of the building. Ignore air resistance a. How long is the ball in the air b.what must have been the initial horizontal component of the velocity c.what is the vertical component of the velocity just before the ball hits the ground d What is the magnitude and direction in degrees below the horizontalA car with a constant speed of 95 km/h enters a circular flat curve with a radius of 0.5 km. The friction between the road and the car's tire can supply a centripetal acceleration of 1.35 m/s². What is the acceleration the car need to remain in this curve regardless of its acceleration of 1.35 m/s²? a) 2.39 m/s² b) 1.74 m/s² c) 1.35 m/s² d) 1.39 m/s² V₁ = V + at лd²h V= C=d F = ma ac r x=x+(+v₁)t +mgh+Fyud F r