If you toss a ball straight upward at 40 m/s with no air resistance, one second after it reaches the top of its path its speed is
A) zero.
B) 10 m/s.
C) 20 m/s.
D) 30 m/s
E) 40 m/s.
Answer: B
You might also like to view...
According to updated models of the formation of the Solar System, Earth's early atmosphere probably consisted mostly of:
A) hydrogen, ammonia, and methane. B) neon, argon, and radon. C) butane, ethane, and hexane. D) carbon dioxide, nitrogen, and water vapor.
Compound Microscope: The distance between the object to be viewed and the eyepiece of a compound microscope is 18.0 cm. The focal length of its objective lens is 0.80 cm and the eyepiece has a focal length of 2.3 cm. The near-point distance of the person using the microscope is 25.0 cm. What is the magnitude of the total magnification of the microscope if it is designed for minimum eyestrain?
A. 120 B. 184 C. 200 D. 360 E. 480
How does the best possible angular resolution of a telescope with a 10-meter diameter mirror compare to that of a telescope with a 5-meter diameter mirror?
A) The 10-meter telescope's angular resolution is better by a factor of 2. B) The 10-meter telescope's angular resolution is better by a factor of 4. C) The 10-meter telescope's angular resolution is better by a factor of 10.
When two or more capacitors are connected in parallel to a battery,
A) the voltage across each capacitor is the same. B) each capacitor carries the same amount of charge. C) the equivalent capacitance of the combination is less than the capacitance of any one of the capacitors. D) all of the given answers E) none of the given answers