Which factors keep Earth in orbit around the Sun? Select two options.
the orbital path of the moon
the gravitational pull of the Sun
the continuous motion of the universe
Earth's changing speed and direction
Earth's resistance to change in motion
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The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

How do we measure or think of speed in the united states?

Afaulty model rocket moves in the xy-plane (the positive y direction is vertically upward). the rocket's acceleration has components ax(t) = ? t2 and ay(t) = ? ? ? t, where ? = 2.50 m/s4 , ? = 9.00 m/s2 , and ? = 1.40 m/s3 . at t = 0 the rocket is at the origin and has velocity ~v0 = v0x ? i + v0y ? j with v0x = 1.00 m/s and v0y = 7.00 m/s. (a) calculate the velocity and position vectors as functions of time. (b) what is the maximum height reached by the rocket? (c) sketch the path of the rocket. (d) what is the horizontal displacement of the rocket when it returns to y = 0?