Jerome pitches a baseball of mass 0.300 kg. The ball arrives at home plate with a speed of 40.0 m/s and is batted straight back to Jerome with a return speed of 52.0 m/s. What is the magnitude of change in the ball's momentum?
a. 3.60 kg/m/s
b. 12.0 kg/m/s
c. 15.6 kg/m/s
d. 27.6 kg/m/s
e. 12.0 kg/m/s
d
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Matter Waves: What is the wavelength of the matter wave associated with a 0.50-kg ball moving at 25 m/s? (h = 6.626 × 10-34 J ? s)
A. 3.5 × 10-35 m B. 5.3 × 10-35 m C. 3.5 × 10-33 m D. 5.3 × 10-33 m
A player throws a football 50.0 m at 61.0° north of west. The westward component of the displacement of the football thrown is given by
A) 64.7 m. B) 24.2 m. C) 74.0 m. D) 0 m. E) 55.0 m.
The most common outpouring of lava occurs as
A) volcanic eruptions. B) carbonates. C) conglomerates. D) fissure eruptions.
An object is attached to a vertical spring and bobs up and down between points A and B. Where is the object located when its kinetic energy is a minimum?
A) at either A or B B) midway between A and B C) one-third of the way between A and B D) one-fourth of the way between A and B E) at none of the above points