A Projectile Is Ejected from a 25-M High Tower with a Velocity

Multiple Choice

A projectile is ejected from a 25-m high tower with a velocity of 40 m/s at an angle of 30 degrees to the horizontal first on Earth and then on Mars.What is the ratio of the time taken to hit the ground on Mars compared to Earth? (Assume g_Mars = 0.38g_Earth)

A) 2.4
B) 2.6
C) 0.38
D) 6.9
E) 1.0