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13. A baseball catcher puts on an exhibition by catching a 0.15-kg ball dropped from a...
A baseball catcher is catching a fastball that is thrown at 43 m/s (96 mi/h) by the pitcher. If the mass of the ball is 0.15 kg and if the catcher moves his mitt backward toward his body by 8.0 cm as the ball lands in the glove, what is the magnitude of the average force acting on the catcher's mitt? Estimate the time interval required for the catcher to move his hands.
A 0.15 kg baseball is pitched with a speed of 35m/s. When the ball hits the catcher's mitt, the glove moves back by 5.0 cm as it stops the ball. Assuming a constant acceleration what was the magnitude of the average net force applied to the baseball by the catcher's mitt?
A baseball catcher extends his arm straight up to catch a fast ball with a speed of 45 m/s. The baseball is 0.145 kg and the catcher's arm length is 0.65 m and mass 4.5 kg. (Indicate the direction with the signs of your answers.) (a) What is the angular velocity (in rad/s) of the arm immediately after catching the ball as measured from the arm socket? (Assume his arm rotates counterclockwise after catching the ball.) rad/s (b) What is...
8.34 A catcher catches a 145 g baseball traveling horizontally at 30.0 m/s . A. How large an impulse does the ball give to the catcher? ANSWER: p= ___________ Kg*m/s B. If it takes the ball 25.0 ms to stop once it is in contact with the catcher's glove, what average force did the ball exert on the catcher? ANSWER: F= __________ N
A pitcher throws a 0.145 kg baseball at 40.19 m/s at the catcher (who is standing still). It takes the catcher 0.07 seconds to stop the baseball after catching it. What was average force required to catch the ball?
1 A ball is dropped from 20.0 ft above the ground. Using energy considerations only, what is the velocity (in ft/s) of the ball just as it hits the ground? Enter answer 2 What is the velocity (in m/s) of a 55.0 kg jogger with a kinetic energy of 1,380.0 J? Enter answer 3. A small sports car and a pickup truck start coasting down a 35.0 m hill together, side by side Assuming no friction, what is the velocity...
A baseball catcher moves his glove away from a 34.0 m/s fastball as he catches it. If the average force he exerts on the ball is 1.12 103 N, how far does the glove move? Assume constant deceleration of the ball, which has a mass of 0.142 kg
A billiard ball of mass 0.15 kg is dropped from a four story building, corresponding to a height of 12 m. If mechanical energy is conserved, what are the (1) kinetic energy and (2) the velocity of the ball just before it strikes the ground surface? Assume that the ball remains intact after impact and that the collision is elastic (kinetic energy is conserved). By using the definitions given for the kinetic theory of gases in Chapter 1, what is...
5. A 0.6 kg ball is dropped with no initial speed from a height of 8 m. The ball bounces off the ground vertically, reaching a height of 7 m. Calculate: (i) The speed of the ball when it hits the ground. (ii) The speed of the ball when it nounces off the ground. (iii) The (magnitude of the) impulse provided by the ground. 6. A 0.2 kg ball hits a bat at 20 m/s and bounces back at 40...
A baseball is dropped from rest from a height of 1.6 m from the ground. What is its velocity when it hits the ground? O a.3.1 m/s O b.9.8 m/s O c.5.6 m/s O d. 2.1 m/s O e.7.3 m/s & QUESTION 2 Continuing from the previous problem, how long was it in the air? O a. 6.2 s O b.4.3 OC.5.1 s O d.1.0 S O e.0.6s