A ball is thrown upward at an angle with a speed and direction such that it reaches a maximum height of 16.0 m above the point it was released, with no appreciable air resistance. At its maximum height it has a speed of 18.0 m/s
With what speed was the ball released?
A) 29.2 m/s B) 25.3 m/s C) 33.0 m/s D) 22.2 m/s E) 36.9 m/s
B
You might also like to view...
What are glacial striations, and how did Wegener use them to support his hypothesis of continental drift?
What will be an ideal response?
Planet Z-34 has a mass equal to one-third that of Earth and a radius equal to one-third that of Earth. With g representing, as usual, the acceleration due to gravity at the surface of Earth, the acceleration due to gravity at the surface of Z-34 is
A) g/3. B) 3g. C) 6g. D) g/9. E) 9g.
An 80-g aluminum calorimeter contains 380 g of water at an equilibrium temperature of A piece of metal, initially at is added to the calorimeter. The final temperature at equilibrium is 32°C
Assume there is no external heat exchange. The specific heats of aluminum and water are 910 J/kg ? K and 4190 J/kg ? K, respectively. The specific heat of the metal is closest to A) 520 J/kg ? K. B) 480 J/kg ? K. C) 390 J/kg ? K. D) 350 J/kg ? K. E) 560 J/kg ? K.
The ultraviolet catastrophe is a catastrophe because
A) human vision cannot detect ultraviolet light directly. B) Wien's law predicts an infinite intensity of radiation at small wavelengths. C) Wien's law predicts an infinite intensity of radiation at large wavelengths. D) ultraviolet light will not produce electrons by the photoelectric effect.