Need Help Decades later another astronaut repeats the same experiment on Mars, dropping a hammer
and a feather simultaneously from a height of 1.00 m. Mars does have an atmosphere but it is
so thin we can neglect it for this calculation so both the hammer and feather hit the ground at
the same time. The acceleration of gravity on Mars is 38% that of the Earth.
a) How long do they take to hit the ground?
b) What is their velocity just before they hit the ground?

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)