Physics First: What Is a Force

An object at terminal velocity has an acceleration of ______.

• Zero

• One g

• 9.8m/s²

• 98m/s²

Tags

NGSS.HS-PS2-1

if a 300-N action force is exerted to the right, the reaction force will be ____.

• 300 N to the right

• 300 N to the left

• 600 N to the right

• 600 N to the left

When a force is exerted on an object, an equal and opposite force is exerted by the object. These are referred to as _____.

• Centripetal forces

• friction forces

• gravitational forces

• action-reaction forces

Tags

NGSS.MS-PS2-1

Acceleration due to gravity is _____.

• 98 m/s²

• 9.8 m/s²

• 9.8 m/s

• 0.98m/s

Tags

NGSS.HS-PS2-4

The upward force exerted on an object falling through air is ______.

• terminal velocity

• momentum

• air resistance

• weightless

When an object moves in a circular path, it accelerates toward the center of the circle as a result of ______.

• terminal velocity

• momentum

• centripetal force

• friction

The statement “to every reaction there is an equal and opposite reaction” is ______.

• the law of conservation of momentum

• Newton's first law of motion

• Newton's second law of motion

• Newton's third law of motion

The product of mass and velocity gives a quantity known as ______.

• momentum

• friction

• inertia

• velocity

Tags

NGSS.HS-PS2-2

The product of mass and acceleration gives a quantity known as ________.

• momentum

• friction

• force

• inertia

Tags

NGSS.HS-PS2-1

When a rocket lifts off, its upward momentum is matched by the downward momentum of ______.

• nothing

• hot gases expelled by the rocket

• air pushed out of the way by the rocket

• the launch pad

Tags

NGSS.HS-PS2-2