A cheetah can run at approximately 100 km/h and a gazelle at 80.0 km/h. If both animals are running at full speed, with the gazelle 50.0 m ahead, how long before the cheetah catches its prey?
a. 9.0 s
b. 14 s
c. 18 s
d. 4.5 s
e. 21 s
a
You might also like to view...
Consider two charged spheres, one with charge +2 C and the other with -2 C. A proton (a positively charged particle) is at the point halfway between the spheres. What is not zero?
a. the potential energy of the proton b. the work to move the proton from infinity to that point c. the force on the proton d. all of the three above are zero
In a short-fiber composite subject to a tensile stress parallel to the fibers, at the center of the fiber the matrix-fiber interface shear stress is equal to _________.
Fill in the blank(s) with the appropriate word(s).
How much energy is carried by a photon of wavelength 660. nm?
A) 1.46 × 10-48 J B) 3.01 × 10-19 J C) 6.63 × 10-34 J D) 5.39 eV E) 4.78 × 10-19 eV
Short-period comets, such as Halley's comet, are believed to come from ______________
a. the Kuiper Belt b. the Oort cloud c. the asteroid belt d. Earth