
skier launches off a ski ramp at an angle theta = 31.0 degree to the horizontal, as shown in the diagram, landing 92.53 m away 4.028 s later. The height of the ramp above the ground is h = 24.00 m. Find the velocity the skier left the ramp at. Find the maximum height of the tree
A solid sphere is released from the top of a ramp that is at a
height h1 = 1.90 m. It rolls down the ramp without slipping. The
bottom of the ramp is at a height of h2 = 1.49 m above the floor.
The edge of the ramp is a short horizontal section from which the
ball leaves to land on the floor. The diameter of the ball is 0.12
m
(a)Through what horizontal distance d, in meters, does...
A heavy pulley is used to descend a height without landing at a great speed. Let the pulley be a uniform disk of mass "M" and radius "R". The descent has a height "h" and you want the landing speed to be "v". You design the pulley to not have enough inertia to slow down a person enough. This lets you adjust the inertia of the pulley by adding masses at the edge of the pulley. A person releases from...
A ramp 15 ft long rises to a platform that is 13 ft off the ground. Find x, the angle of elevation of the ramp. Round your answer to the nearest tenth of a degree. Platform x = 0 Ground
AMSN ~ ATPN. Find x and y. See Example 6. (Let a = 40, b = 32, C = 32, and d = 80.) x= ys M c P d т
3. Let X be the height of Zebras, assume the X is a random variable with mean 10 and variance 20. Suppose Y is be the weight of Zebras, assume the Y is a random variable with mean 10 and variance 40. Let E(XY)-80 (a) Find the covariance and correlation between X and Y. Find the covariance and correlation between aX + b and cY + d. a,b,c, and d are unknown constants. Your answer can depend on them. (b)...
a sample of 41 minutes of pain in their height and inches and pulse rate in beats per minute are measured the linear correlation coefficient is 0.203 and the equation of the regression line is y equals 17.7 + 0.860 x where X represents height the mean of the 40 Heights is 62.9 in in the mean of the 40 pulse rate is 73.4 beats per minute find the best predicted pulse rate of a woman who is 72 in...
An aircraft is coming in for a landing at a height of 300 m when the propeller falls off. The aircraft is flying at 43.0 m/s horizontally. The propeller can be modeled by three uniform rods, each 100 kg and 90 cm long, rotating about their ends. It has a rotation rate of 20.0 rev/s. a. How much rotational kinetic energy does the propeller have when it hits the ground? b. What about translational kinetic energy (when it hits the...
A skateboarder shoots off a ramp with a velocity of 6.8 m/s, directed at an angle of 63° above the horizontal. The end of the ramp is 1.1 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point on the ground directly below the top of the ramp. (a) How high above the ground is the highest point that the skateboarder reaches? (b) When...
A skateboarder shoots off a ramp with a velocity of 5.9 m/s, directed at an angle of 57° above the horizontal. The end of the ramp is 1.0 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point on the ground directly below the top of the ramp. (a) How high above the ground is the highest point that the skateboarder reaches? (b) When...