URGENT! Help Me
What is the shape of a planetary orbit?

Oval Shaped almost.

Explanation:

Planets and orbits come in all type of shaped and sizes. But for the planets they are almost like a circular shaped planet/orbit.

Hope this Helps! :)

If this was the the answer you were not looking for please don't hesitate to comment again and I will get back to it as soon as I can! :)

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

because if the tool that you are using is not balanced it there would be false mass.