You push really hard against a round rock, but you cannot make it roll. Which statement best explains why you cannot move the rock (A)Gravity pulls the rock toward the center of Earth.
(B)The forces between you and the rock are balanced.
(C)The force of your push is greater than the opposing force.
(D)There is no friction to help you move the object.

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.

What properties of a moving object are used in determining the object's energy of motion

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.