A 90-kg halfback running north with a speed of 10 m/s is tackled by a 120-kg opponent running south at 5.0 m/s. The collision is perfectly inelastic. Compute the velocity of the two players just after the tackle
a. 1.4 m/s south
c. 2.8 m/s north
b. 2.8 m/s south
d. 1.4 m/s north
D
You might also like to view...
Structure 1 with member BC of length L/2 has force P1 applied at joint C. Structure 2 with member BC of length L has force P2 applied at C. Both structures have constant flexural rigidity EI. If the ratio of the applied forces P1/P2 5 5/2, the ratio of the joint C lateral deflections ?C1/?C2 is approximately:
(A) 1/2
(B) 4/5
(C) 3/2
(D) 2
An object 2.0 cm in height is placed at the center of curvature C in front of a concave mirror. What is the height of its image?
A) -0.50 cm B) -1.0 cm C) -1.5 cm D) -2.0 cm E) -6 cm
Mercury has a density of 13,600 
The column of mercury that would produce a pressure of 
is
A. 32.120 in. B. 29.920 in. C. 25.430 in. D. 19.800 in. E. 9.8000 in.
Consider the various frequencies of the three photons emitted from the following three individual electron transitions in the figure below: n=3 to n=2; n=2 to n=1; n=3 to n=1. These transitions would produce three spectral lines in a spectroscope
If the energy spacing between the levels were equal, would this affect the number of spectral lines? A) Yes, two otherwise separate lines would converge into a single more intense line. B) No, but the spacing between the spectral lines would change. C) Yes, two otherwise separate lines would converge into a single less intense line. D) No, but some would then require a prism in order to be seen.