Forces Review

Which of the following represents the Normal Force on the box?

• F₁

• F₂

• F₃

Which of the following represents the Force of Friction on the box?

• F₁

• F₂

• F₃

Which of the following represents the Weight of the box?

• F₁

• F₂

• F₃

A satellite is launched into orbit. As the distance between the surface of the Earth and the satellite increases, the mass of the satellite

• increases

• decreases

• remains the same

A satellite is launched into orbit. As the distance between the surface of the Earth and the satellite increases, the gravitational force between the satellite and the Earth

• increases

• decreases

• remains the same

A 10kg object is at rest on a wooden floor. What is the approximate weight of the object?

• 1N

• 10N

• 100N

• 1000N

A 5kg object, starting from rest, slides down a frictionless incline with a constant acceleration of 4m/s² for 3s. What force is needed to produce this acceleration?

• 20N

• 15N

• 12N

• 5N

A 4000kg truck is accelerating from rest to a speed of 20m/s in 5s. What force is needed to cause this acceleration?

• 80,000 N

• 16,000 N

• 20,000 N

• 12,000 N

What is the gravitational force of attraction between a planet and a 13kg mass that is freely falling toward the surface at 6.2m/s² ?

• 80.6N

• 2.10N

• 0.48N

• 19.2N

Which of the following statements is true about a book resting on a table?

• It is in equilibrium because the weight of the book is equal to the weight of the table.

• It is in equilibrium because the downward weight of the book is equal to the upward push of the table.

• It is accelerating because the static friction between the book and the table is greater than the kinetic friction.

• It is accelerating because the kinetic friction between the book and the table is greater than the static friction.