9. Three glasses A, B, and C contain liquids with densities 1.2, 1.3, and 1.4, respectively. An object fully
submerged in which one of the liquids experiences the smallest buoyant force?
a) A
b) B
c) C
d) same for all
e) depends on the object weight
10. What would be the answer to the previous question, if the object sinks to the bottom of the liquids?
a) A
b) B
c) C
d) same for all
e) depends on the object weight
11. What is the mass of a meter stick if it is balanced at the 25-cm mark with a 50 gram mass hanging from the 0
mark?
a) 50 g
b) 75 g
c) 100 g
d) 150 g
e) none of these
12. A 200 g mass, if hung from a spring, starches the spring by 2 cm. How much would the same spring be stretched
if a 500 g mass were hung from it?
a) 2 cm
b) 3 cm
c) 4 cm
d) 5 cm
e) none of these
13. A 1-kg mass attached to a spring of constant 100 N/m is displaced by 10 cm and released. What is the kinetic
energy of the mass 5 cm from its equilibrium position?
a) 0.25 J
b) 0.5 J
c) 0.75 J
d) 1 J
e) none of these
14. The impulse experienced by a 1-kg object in 2 seconds in free fall is equal to
a) 1 NS
b) 2 NS
c) 9.8 NS
d) 19.6 NS
e) none of these
