"the wave" is a particular type of pulse that can
propagatethrough a large crowd gathered at a sports arena to watch
a socceror american football match. the elements of the medium
arespectators, with zero position corresponding to their being
seatedand maximum position corresponding to their standing and
raisingtheir arms. when a large fraction of the spectators
participate inthe wave motion, a somewhat stable pulse shape can
develop. thewave speed depends on people's reaction time, which is
typically onthe order of 0.1s. estimate the order of magnitude, in
minutes, ofthe time required for such a pulse to make one circuit
around alarge sports stadium. state the quantities you measure or
estimateand their values.

Zamir and talia raced through a maze. zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m east and 4 m north. talia walked 2 m north, 6 m east, 3 m south, 4 m east, and 4 m north. compare their displacements:

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

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.)