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1) An outfielder throws a ball that has an initial angular speed of 40.0 rad/s. After...
To throw a curve ball, a pitcher gives the ball an initial angular speed of 36 rad/sec. When the catcher gloves the ball 0.595 sec later, it had an average angular deceleration of 0.3 rad/sec^2. What is ball's angular velocity when the catcher catches the ball? How many revolutions does the ball make before being caught? A 500 kg elevator moves upward with acceleration of 2 m/sec^2 though a vertical distance of 25 m. How much work was done by...
A machine part rotates at an angular speed of 0.70 rad/s; its speed is the increased to 2.6 rad/s at an angular acceleration of 0.51 rad/s2. Find the angle through which the part rotates before reaching this final speed.A rotating wheel requires 9.00 s to rotate 30.0 revolutions. Its angular velocity at the end of the 9.00 s interval is 97.0 rad/s. What is the consta angular acceleration of the wheel?
Problem 4 the bounced ball before the bounce. An outfielder throws a baseball to his catcher in an attempt to throw out a runner at home plate. The ball bounces once before reaching the catcher. Assume the angle at which shown in the figure below, but that the ball's speed after the bounce is one-half of what is was (a) Assume the ball is always thrown with the same initial speed and ignore air l leaves the ground is the...
A diver leaves the springboard with an initial angular velocity of 4.1 rad/sec and a constant angular acceleration of -0.25 rad/sec^2. How long will it take for her to complete 1.5 revolutions, assuming her initial angular displacement is 0 radians?
A boy throws a ball with an initial velocity of 25 m/s at an angle of 30° above the horizontal. If air resistance is negligible, how high above the projection point is the ball after 2.0 s? How long is it in the air, and how far does it go before hitting the ground? 6.
A disk rotates with constant angular acceleration. The initial angular speed of the disk is 2.1π rad/s. After the disk rotates through 13.6π radians, the angular speed is 6.2π rad/s. (a) What is the magnitude of the angular acceleration? (b) How much time did it take for the disk to rotate through 13.6π radians? (c) What is the tangential acceleration of a point located at a distance of 9.9 cm from the center of the disk?
The angular speed of a propeller on a boat increases with constant acceleration from 14 rad/s to 35 rad/s in 2.2 revolutions. What is the angular acceleration of the propeller?
29. (1 point) A pulley has an initial angular speed of 2.50 rad/s and a constant angular acceleration of 1.40 rad/s. Through what angle does the pulley turn in 7.00 o) A) 113 rad B) 19.3 rad C) 42.6 rad D) 51.8 rad E) 161 rad 30. (1 point) A force of 50.5 N is applied tangentially to a wheel of radius 0.270 m and causes an angular acceleration of 2.20 rad/s. What is the moment of inertia of the...
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Problem# 5
ground? d) Provide a final drawing with all the vectors Problem5 A child throws a ball with an initial speed of 8.00 m/s at an angle of 40.0° above the horizontal. The ball leaves her hand 1.00 m above the ground and experience negligible air resistance. (a) How far from where the child is standing does the ball hit the ground? (b) How long is the...
Question 1 1 pts What is the angular speed in radians per second (rad/s) of the hour hand on an analog clock? A 1.5 x 1o4 rad/s B. 1.7 x 103 rad/s C 0.20 rad/s D. 0.052 rad/s O D Question 2 1 pts A record player rotates a record at 45 revolutions per minute. When the record player is switched off, it makes 4.0 complete turns at a constant angular acceleration before coming to rest. What was the magnitude...