Suppose an object is in free fall. Each second the object falls:
a. the same distance as in the second before.
b. a larger distance that in the second before.
c. with the same instantaneous speed.
d. with the same average speed.
e. none of above
Answer: b. a larger distance that in the second before.
You might also like to view...
A nonrelativistic proton is confined to a length of 2.0 pm on the x-axis. What is the kinetic energy of the proton if its speed is equal to the minimum uncertainty possible in its speed?
(1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s, mproton = 1.67 × 10-27 kg) A) 5.1 eV B) 51 eV C) 510 eV D) 5100 eV E) 51,000 eV
A source emits sound at a fixed constant frequency f.If the temperature of the air rises, the frequency you hear is
a. the same as f. b. higher than f. c. lower than f. d. unrelated to f.
If the primary coil of a transformer contains more loops than the secondary coil then it is a
A) step-up transformer. B) step-down transformer.
Water is flowing through a V-shaped weir, which has a 30° vertex
The flow rate is 7.0 x 104 kg/s and the speed of the flow is 5.0 m/s. What is the distance from the surface of the water to the vertex? A) 3.6 m B) 7.2 m C) 4.8 m D) 9.6 m E) 14.4 m