A bullet is dropped into a river from a very high bridge at the same time as another bullet is fired straight downward from a rifle. Neglecting air resistance, the acceleration just before striking the water is
A) greater for the dropped bullet.
B) greater for the fired bullet.
C) the same for each bullet.
D) none of the above
Answer: C
You might also like to view...
A 1.5-kg object moving along the x axis has a velocity of +4.0 m/s at x = 0. If the only force acting on this object is shown in the figure, what is the kinetic energy of the object at x = +3.0 m?
A. 18 J B. 21 J C. 23 J D. 26 J E. 8 J
A particle (charge = +2.0 mC) moving in a region where only electric forces act on it has a kinetic energy of 5.0 J at point A. The particle subsequently passes through point B which has an electric potential of +1.5 kV relative to point A. Determine the kinetic energy of the particle as it moves through point B.
A. 3.0 J B. 2.0 J C. 5.0 J D. 8.0 J E. 10.0 J
Which one of the following is TRUE?
A) Most elliptical galaxies contain only young stars. B) Most galaxies appear to be approaching the Milky Way Galaxy. C) Irregular galaxies rarely have star formation taking place in them. D) Smaller galaxies called dwarf galaxies tend to be found around larger galaxies like the Milky Way. E) Galaxy collisions destroy most of the stars in the galaxies involved.
Suppose you go outside and see the view shown when you look due south. Knowing that the stars of Orion's Belt lie close to the celestial equator, what can you conclude?
A) You are in the Northern Hemisphere. B) You are in the Southern Hemisphere. C) It is winter. D) In a couple of hours, Lepus will be higher in the sky than Orion.