problem
Favourite
Escape from planet earth
Age
16 to 18
Challenge level
How fast would you have to throw a ball upwards so that it would
never land?
problem
Favourite
Receding baseball
Age
16 to 18
Challenge level
Explore the kinematics of a pitched baseball
problem
Favourite
Gravity paths
Age
16 to 18
Challenge level
Where will the spaceman go when he falls through these strange planetary systems?