Understanding Forces and Motion

A car and a truck collide head-on. According to Newton's Third Law, which of the following statements is true about the forces during the collision?

• The car exerts a greater force on the truck.

• The truck exerts a greater force on the car.

• The car and the truck exert equal forces on each other.

• The forces depend on the speed of the vehicles.

Tags

NGSS.MS-PS2-1

Which of the following scenarios best illustrates Newton's Third Law of Motion?

• A book resting on a table.

• A rocket launching into space.

• A ball rolling down a hill.

• A car accelerating on a highway.

Tags

NGSS.MS-PS2-1

Design an experiment to demonstrate how the mass of an object affects its acceleration when a constant force is applied. What is the primary variable you would change?

• The surface on which the object moves.

• The mass of the object.

• The type of force applied.

• The shape of the object.

Tags

NGSS.MS-PS2-2

A student plans an investigation to show that the change in an object's motion depends on the sum of the forces acting on it. Which of the following should be kept constant during the experiment?

• The mass of the object.

• The type of surface.

• The sum of the forces.

• The initial velocity of the object.

Tags

NGSS.MS-PS2-2

Which of the following best supports the claim that gravitational interactions are attractive and depend on the masses of interacting objects?

• The gravitational force between two objects increases as the distance between them increases.

• The gravitational force between two objects is independent of their masses.

• The gravitational force between two objects is always repulsive.

• The gravitational force between two objects increases as their masses increase.

Tags

NGSS.MS-PS2-4

Construct an argument using evidence to support the claim that the gravitational force between Earth and the Moon is attractive. Which of the following pieces of evidence would be most relevant?

• The Moon orbits the Earth in a circular path.

• The Moon has a rocky surface.

• The Earth has a magnetic field.

• The Moon has craters.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Analyze the following data: A 5 kg object is subjected to a net force of 20 N. What is the acceleration of the object according to Newton's Second Law?

• 2 m/s²

• 4 m/s²

• 5 m/s²

• 10 m/s²

Tags

NGSS.MS-PS2-2

A 10 kg object is accelerating at 3 m/s². What is the net force acting on the object?

• 10 N

• 20 N

• 30 N

• 40 N

Tags

NGSS.MS-PS2-2

A student claims that increasing the mass of an object will decrease its acceleration if the same force is applied. Which of the following equations supports this claim?

Tags

NGSS.MS-PS2-2

Which of the following best describes the relationship between force, mass, and acceleration in Newton's Second Law?

• Force is directly proportional to mass and inversely proportional to acceleration.

• Force is directly proportional to acceleration and inversely proportional to mass.

• Force is directly proportional to both mass and acceleration.

• Force is inversely proportional to both mass and acceleration.

Tags

NGSS.MS-PS2-2