Answer:
planets move in elliptical orbit.
Explanation:
this is because planets are formed closer to the sun while the comets are formed further.
Answer:
(A) 0 Joules
Explanation:
The force applied exists in the vertical direction only. There is no displacement in the vertical direction. (Work)=(Force in y direction) x (Displacement in y direction) = (Force) x 0 = 0 J
A.
According to the equation: v=λ*f
λ stands for wavelength. wavelength increases, the frequency will decrease. lower frequency deserves low energy.
Answer:

Explanation:
You need to be careful with units for this problem. The force will be:



The ball is traveling in the + x direction at 8m per second. After 20 seconds it has moved 160m forward from the spot where it was tossed.