A bullet shot straight up returns to its starting point in 10 s. Its initial speed was
A) 98 m/s.
B) 49 m/s.
C) 9.8 m/s.
D) 24.5 m/s.
E) 32. ft/s.
B
You might also like to view...
The ____________________ of a black hole is the radius from the black hole at which the escape velocity is equal to the speed of light
Fill in the blank(s) with correct word
Why is there a lower end to the main sequence?
What will be an ideal response?
If the merger theory is correct, the brightest active galactic nuclei should
A) form small irregular galaxies. B) contain supermassive black holes. C) contain the least mass. D) contain the youngest stars. E) be in the smallest elliptical galaxies.
A 6.5-g iron meteor hits Earth at a speed of 295 m/s. If its kinetic energy is entirely converted to the thermal energy of the meteor, by how much will its temperature rise? The specific heat of iron is 113 cal/kg ? C°, and 1 cal = 4.186 J
A) 92.0 C° B) 57,100 C° C) 0.147 C° D) 384 C°