A car traveling along the highway brakes to a stop over a certain distance. More braking force is required if the car has
A) more mass.
B) more momentum.
C) less stopping distance.
D) all of the above
E) none of the above
Answer: D
You might also like to view...
In the riddle, what is meant by light leaving its trap?
A: Light travelled much slower than the speed of light after the time of nucleosynthesis. B: Light was stuck to the matter concentrations by the force of gluons. C: Black holes prevented light from escaping in the early universe until after recombination. D: The universe was opaque until atoms formed and radiation could travel freely through space. E: The electromagnetic force held light in its place since light has an opposite charge to matter.
At the moment of a total eclipse, the moon lies along a line from the Earth to the sun. If your normal weight is 600 N, how much is your weight decreased by the combined pull of the sun and moon? MSUN = 2.0 × 10^30 kg, rS-E = 1.5 × 10^8 km MMOON = 7.4 × 10^22 kg, rM-E = 3.8 × 10^5 km
Compared to spiral galaxies, elliptical galaxies have.
A.) More gas, redder colors, and less new star formation. B.) Less gas, bluer colors, and more new star formation. C.) More gas, bluer colors, and more new star formation. D.) Less gas, redder colors, and less new star formation. E.) Less gas, bluer colors, and more new star formation.
A boat in a small pool is loaded with a barrel full of water. If the water in the barrel is poured overboard, into the pool, the boat will
1) sink farther into the water, 2) ride higher in the water, 3) ride no higher or lower in the water, and the water level at the side of the pool will 4) rise. 5) fall. 6) remain unchanged.