400 * 3 = 1200
A jet can travel 1200 minutes for 3 seconds
The acceleration of a body in a gravitational field is independent of its mass. Both the stones will fall with the same acceleration through the same height and hence they will strike the ground simultaneously.
GIVE ME POINTS
are you sure it's Thaivan or Taiwan. If it's Taiwan than it's Taipei.
Hope this help :))