physics
posted by Erin on .
The world record for the discus throw is 74.08m , set by Jürgen Schult in 1986.If he had been competing, not on earth, but on Mars, where the acceleration due to gravity is 0.379 what it is on earth, and if he had thrown the discus in exactly the same way as on earth, what would be his Martian record for this throw? Assume that the discus is released essentially at ground level

Ignoring aerodynamic effects, the maximum distance a thrown object can travel over level ground is V^2/g, where V is the launch velocity and g is the acceleration of gravity.
This happens when the object is thrown at a 45 degree angle from the horizontal. The same equation applies on Mars, where g is 0.379 times as large as on Earth. That makes the distance 1/.379 = 2.64 times farther than it is on earth.