A uniform solid sphere is rolling without slipping along a horizontal surface with a speed of 5.50 m/s when it starts up a ramp that makes an angle of 25.0° with the horizontal
What is the speed of the sphere after it has rolled 3.00 m up the ramp, measured along the surface of the ramp?
A) 8.02 m/s B) 3.53 m/s C) 1.91 m/s D) 4.01 m/s E) 2.16 m/s
B
You might also like to view...
Which geometrical shape has the least surface area for a given volume?
A) cube B) pyramid C) cylinder D) sphere E) none of the above
Molecular Rotation: A diatomic molecule has 2.6 × 10-5 eV of rotational energy in the L = 2 quantum state. What is its rotational energy in the L = 1 quantum state? (1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s)
A. 3.4 × 10-6 eV B. 5.3 × 10-6 eV C. 7.8 × 10-6 eV D. 8.7 × 10-6 eV
Significant Figures: The number of significant figures in 0.01500 is
A. two. B. three. C. four. D. five.
Why do scientists say that evolution is a "theory"?
A) because it explains a great deal about life and is supported by an enormous body of evidence B) because they are not very confident that it really happened C) because it is supported by only a small amount of evidence D) because it's really just a guess about how life developed on Earth