Diego hypothesizes that the Earth wobbles on its axis in a pattern that is repeated every 20,000 years. Which of the following ways would be the best way to test Diego's hypothesis?
A.
conduct a controlled experiment
B.
make observations in nature
C.
observe the movement of other planets
D.
make a model

Part a constants huck finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion what is huck's velocity (speed and direction) relative to the river bank? express your answer to three significant figures and include the appropriate units. relative to the shore)

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?