A 10-kg block is pushed across a horizontal surface with a horizontal force of 30 N against a friction force of 10 N. The acceleration of the block is
A) 1 m/s2.
B) 2 m/s2.
C) 5 m/s2.
D) 10 m/s2.
E) none of the above
Question 2
You give your physics book a quick push so that it slides along a table top. It soon slides to a stop. How would Aristotle and Galileo interpret this?
A) They agree that physics books can make you crazy and it's best not to think about them.
B) Both of them say that this is just the natural motion of the book.
C) Both of them say the force of friction slows it to a stop.
D) Aristotle says this is just the natural motion of the book, but Galileo says the force of friction slows it to a stop.
E) Aristotle says the force of friction slows it to a stop, but Galileo says this is just the natural motion of the book.
Parts of the Hand Used in Palpation; Dorsal Surface
Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
Surface Maps
Pressure gradient force
Stretching the shoulder muscles with arm in horizontal flexion.
The surface temperature of the star is 6000 K. At what wavelength is its light output a maximum