A catcher arranges to catch a baseball dropped from a height 50 m above his glove. However, his friends substitute a soft 250 g red grapefruit, so that it will smash apart when he catches it. His glove stops the grapefruit in 0.010 s. What force does the glove exert on the grapefruit?
a. 0.078 3 N
b. 783 N
c. 2 450 N
d. 24 500 N
e. 78 300 N
B
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Three horses are side-by-side on a merry-go-round: one at the edge, one near the axis, and one in between. Each horse has the same angular speed. Which horse has the greatest linear speed?
A. The horse nearest the axis B. The horse in the middle C. The horse at the edge D. The linear speed is the same for all three horses
An ideal incompressible fluid flows at 12 m/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the wider section?
A) 12 m/s B) 6.0 m/s C) 4.0 m/s D) 3.0 m/s
__________is the distribution of clusters and superclusters of galaxies in filaments and walls enclosing voids
A) Redshift B) The big bang C) The big rip D) Large-scale structure
Three masses are positioned as follows: 2.0 kg at (0, 0); 2.0 kg at (2, 0); and 4.0 kg at (2,1). Determine the coordinates of the center of mass
What will be an ideal response?