Determine the force of gravity on a 4.9-kg object on Earth's surface. The gravitational field strength of Earth is 9.8 N/kg.

Multiple-choice options:
a) 2.0 N
b) 0.5 N
c) 2.0 kg
d) 48.0 N

With i really need the correct answer!

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.