No Stakes: Motion & Forces

Explain the difference between mass and weight, and how they are affected by location.

• Mass is the amount of matter in an object and remains constant regardless of location, while weight is the force exerted by gravity on that object and varies with location.

• Mass is the force exerted by gravity on an object and varies with location, while weight is the amount of matter in an object and remains constant.

• Mass and weight are both the amount of matter in an object and remain constant regardless of location.

• Mass and weight are both the force exerted by gravity on an object and vary with location.

Discuss how Newton's Second Law of Motion explains the relationship between force, mass, and acceleration.

• Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

• Newton's Second Law states that the acceleration of an object is directly proportional to its mass and inversely proportional to the net force acting on it.

• Newton's Second Law states that the force acting on an object is directly proportional to its mass and inversely proportional to its acceleration.

• Newton's Second Law states that the force acting on an object is directly proportional to its acceleration and inversely proportional to its mass.

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NGSS.HS-PS2-1

Describe the concept of free fall and how it relates to gravitational force.

• Free fall is the motion of an object where gravity is the only force acting upon it, resulting in a constant acceleration.

• Free fall is the motion of an object where both gravity and air resistance are acting upon it, resulting in a constant velocity.

• Free fall is the motion of an object where gravity is the only force acting upon it, resulting in a constant velocity.

• Free fall is the motion of an object where both gravity and air resistance are acting upon it, resulting in a constant acceleration.

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NGSS.HS-PS2-4

Analyze the factors that affect the trajectory of a projectile and how they influence its motion.

• The trajectory of a projectile is affected by its initial velocity, launch angle, and gravity, which together determine its range and height.

• The trajectory of a projectile is affected by its mass, air resistance, and gravity, which together determine its range and height.

• The trajectory of a projectile is affected by its initial velocity, mass, and air resistance, which together determine its range and height.

• The trajectory of a projectile is affected by its launch angle, mass, and air resistance, which together determine its range and height.

Explain how inertia influences the motion of an object according to Newton's First Law of Motion.

• Inertia is the tendency of an object to resist changes in its state of motion, meaning an object at rest stays at rest and an object in motion stays in motion unless acted upon by a net external force.

• Inertia is the tendency of an object to change its state of motion, meaning an object at rest will move and an object in motion will stop unless acted upon by a net external force.

• Inertia is the force that causes an object to change its state of motion, meaning an object at rest will move and an object in motion will stop unless acted upon by a net external force.

• Inertia is the force that keeps an object in its current state of motion, meaning an object at rest stays at rest and an object in motion stays in motion unless acted upon by a net external force.

You push on a box with a horizontal force of 140 N to the right. Friction acts against this with a strength of 60 N to the left. If your friend helps you push by applying another 40 N force rightward, find the net force.

• 0 N

• 240 N

• 80 N

• 120 N

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NGSS.HS-PS2-1

Evaluate the independence of horizontal and vertical motions in projectile motion and how this concept is applied in real-world scenarios.

• In projectile motion, horizontal and vertical motions are independent of each other, allowing for the prediction of projectile paths in various applications such as sports and engineering.

• In projectile motion, horizontal and vertical motions are dependent on each other, complicating the prediction of projectile paths in various applications such as sports and engineering.

• In projectile motion, horizontal and vertical motions are independent of each other, but this independence is rarely applicable in real-world scenarios.

• In projectile motion, horizontal and vertical motions are dependent on each other, but this dependence is rarely applicable in real-world scenarios.

Analyze how the concept of net force is used to understand the motion of objects in one-dimensional scenarios.

• Net force is the vector sum of all forces acting on an object, and it determines the object's acceleration and direction of motion in one-dimensional scenarios.

• Net force is the scalar sum of all forces acting on an object, and it determines the object's acceleration and direction of motion in one-dimensional scenarios.

• Net force is the vector sum of all forces acting on an object, but it does not affect the object's acceleration and direction of motion in one-dimensional scenarios.

• Net force is the scalar sum of all forces acting on an object, but it does not affect the object's acceleration and direction of motion in one-dimensional scenarios.

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NGSS.HS-PS2-1