Problem P. 4706. (February 2015)
P. 4706. An object slides down frictionlessly from the top of a fixed straight slope of base 30 cm. At least how long does it take for the object to slide down?
(4 pont)
Deadline expired on 10 March 2015.
Statistics:
108 students sent a solution.  
4 points:  79 students. 
3 points:  17 students. 
2 points:  2 students. 
1 point:  3 students. 
0 point:  7 students. 
