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Assume that the athlete approaches the take-off line from the left with a horizontal velocity of 10m/s, remains in contact with the ground for 0.1s, and take off at a 60oangle with a velocity for 10m/s, determine (1) the vertical component of the average impulsive force exerted by the ground on his foot. (2) the horizontal frictional force. The mass of the athlete is 100kg and the coefficient of kinetic friction (μk) is 0.1.
Two cars start from rest from point A on a circular track of radius r=200 m. Find the angular acceleration of the blue car in rad/sec^2
During a particular thunderstorm, the electric potentialdifference between a cloud and the ground is Vcloud -Vground = 1.3 x 108 V, What is the change in an electron's potential energy
A 65.0 kg basketball player jumps vertically and leaves the floor with a velocity of 1.80 m/s upward. What impulse does the player experience
The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 302000 rpm. Calculate the angular acceleration produced by the drill
The Superman ride at Magic Mountain advertises a maximum speed of 100 MPH. Find the minimum height of the tower in meters
An proton (m = 1.67 ´ 10-27 kg and q = 1.6 ´ 10-19 C) travelling at 2.7 × 105 ms-1 enters a magnetic field of 1.2 T at right angles to the direction of motion of the electron. What is the centripetal force on proton.
The uniform horizontal beam illustrated in the photo weighs 500 N and supports a 700 N load. Find the tension in the tie rope.
The minimum angle of resolution of the diffraction patterns of two identical monochromatic point sources in a single-slit diffraction pattern is 7.5×103rad. what is the wavelength of the sources
a sailboat is traveling east at 5.9 . a sudden gust of wind gives the boat an acceleration 0.80 40 north of east.
Which is in contact with the stove?
A plane mirror and the concave mirror (f = 8.70 cm) are facing each other and are separated by a distance of 23.0 cm. An object is placed between the mirrors and is 11.5 cm from each mirror.
Starting from the top left corner and moving clockwise the charges are -10 uC, -10 uC, 5 uC, and 5 uC. What is the electric force on the top left charge due to all the other charges
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