Car A is traveling at twice the speed of car B. They both hit the brakes at the same time and undergo identical decelerations. How does the distance required for car A to stop compare with that for car B?
What will be an ideal response?
It takes four times the distance to stop.
You might also like to view...
An 825-kg space vehicle is circling Earth in a circular orbit with a radius of 10,300 km. Its orbit is to be changed to a larger circle with a radius of 17,400 km. How much energy is required to accomplish this?
The mass of Earth is 5.97 × 1024 kg and G = 6.67 × 10-11 N ? m2/kg2. A) 1.00 × 109 J B) 1.30 × 1010 J C) 6.51 × 109 J D) 4.45 × 109 J E) 4.50 × 1010 J
A metal blade spins at a constant rate of 5.0 revolutions per second about a pivot through one end of the blade. This rotation occurs in a region where the component of the earth's magnetic field perpendicular to the blade is 30 mT. If the blade is 60 cm in length, what is the magnitude of the potential difference between its ends?
a. 0.24 mV b. 0.20 mV c. 0.17 mV d. 0.27 mV e. 0.34 mV
A package is oscillating on a spring scale with a period of 4.60 s. At time t = 0.00 s the package has zero speed and is at x = 8.30 cm. At what time after t = 0.00 s will the package first be at x = 4.15 cm?
A) 0.575 s B) 0.767 s C) 1.15 s D) 1.30 s E) 1.53 s
The purpose of the moderator in a reactor is to
A. separate the nuclear fuel from the spent products of fission. B. provide cooling for the control rods. C. reduce the number of neutrons available for the chain reaction. D. slow neutrons down so that they will be more likely to initiate fission reactions.