Solution: C. Pangea
The hypothesis of Continental drift suggests that in past, there was only one landmass on the Earth -Pangaea which drifted apart due to movement of plate tectonics causing earthquake. This hypothesis is supported by many evidences which includes presence of similar fossils on different landmasses, common land features such as widespread presence of glacial sediments etc.
Kinetic energy is the energy an object has due to its motion.
We use the equations of motion,
(A)
(B)
Here, v is final velocity of the body, u is initial velocity of the body, a is the acceleration of the body, t is the time taken in the motion and s is distance traveled by the body.
Given 
, 
and 
.
So, from equation (A)
Now from the equation (B),
Thus, the distance over which the puck accelerates is 0.8 m.
Answer:
Observational data collected by doppler radar, radiosondes, weather satellites, buoys and other instruments are fed into computerized NWS numerical forecast models.
Static friction and normal force? I would Google to double check if I'm right.
