A 0.140-kg baseball is thrown with a velocity of 27.1 m/s It is struck by the bat with an average force of 5000 N, which results in a velocity of 37.0 m/s in the opposite direction from the original velocity
How long were the bat and ball in contact?
A) 4.30 × 10-3 s B) 3.07 × 10-2 s C) 1.79 × 10-3 s D) 1.28 × 10-2 s
C
You might also like to view...
Which statement about accretion disks is not true?
A) The gas in the inner parts of the disk travels faster than the gas in the outer parts of the disk. B) The gas in the inner parts of the disk is hotter than the gas in the outer parts of the disk. C) The primary factor determining whether a white dwarf has an accretion disk is the white dwarf's mass. D) Accretion disks are made primarily of hydrogen and helium gas.
Which of the following is true of natural selection?
A) It is a random occurrence. B) It does not occur in most species of organisms. C) It is directed by changes in the environment. D) It does not lead to evolution of a species.
A proton moving at 6.0 × 10^4 m/s is projected at an angle of 30° above a horizontal plane. If an electric field of 400 N/C is acting down, how long does it take the proton to return to the horizontal plane? (Hint: Ignore gravity. mproton = 1.67 × 10^-27 kg, qproton = 1.6 × 10^-19 C)
a. 7.8 × 10^-6 s c. 7.8 × 10^-7 s b. 1.6 × 10^-6 s d. 3.9 × 10^-6 s
A scientist is investigating the results of varying temperature on the growth rate of a bacterial culture. In this experiment, temperature is the:
a. dependent variable b. independent variable c. control d. model e. hypothesis