Olympiad problems

2011 F = Ma, 4

Tags: 2011 , Problem 4

Rank the [i]magnitudes[/i] of the [i]distance[/i] traveled during the ten second interval. (A) $\text{I} > \text{II} > \text{III}$ (B) $\text{II} > \text{I} > \text{III}$ (C) $\text{III} > \text{II} > \text{I}$ (D) $\text{I} > \text{II = III}$ (E) $\text{I = II = III}$

2008 F = Ma, 4

Tags: 2008 , Problem 4

What is the maximum displacement from start for the toy car? (a) $\text{3 m}$ (b) $\text{5 m}$ (c) $\text{6.5 m}$ (d) $\text{7 m}$ (e) $\text{7.5 m}$

2010 F = Ma, 4

Tags: 2010 , Problem 4

Two teams of movers are lowering a piano from the window of a $10$ floor apartment building. The rope breaks when the piano is $30$ meters above the ground. The movers on the ground, alerted by the shouts of the movers above, first notice the piano when it is $14$ meters above the ground. How long do they have to get out of the way before the piano hits the ground? (A) $\text{0.66 sec}$ (B) $\text{0.78 sec}$ (C) $\text{1.67 sec}$ (D) $\text{1.79 sec}$ (E) $\text{2.45 sec}$

2009 F = Ma, 4

Tags: 2009 , Problem 4

A spaceman of mass $\text{80 kg}$ is sitting in a spacecraft near the surface of the Earth. The spacecraft is accelerating upward at five times the acceleration due to gravity. What is the force of the spaceman on the spacecraft? (A) $\text{4800 N}$ (B) $\text{4000 N}$ (C) $\text{3200 N}$ (D) $\text{800 N}$ (E) $\text{400 N}$