Chapter 12 Vocab Flashcards Preview

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Flashcards in Chapter 12 Vocab Deck (14)
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1
Q

Define force.

A

Force is a push or a pull that acts on an object.

2
Q

Define newton

A

Newton (N) is the SI unit for force, equal to the force that causes a 1-kilogram mass to accelerate at a rate of 1 meter per second squared (1 N = 1kg•m/s2)

3
Q

Define friction

A

Friction is a force that opposes the motion of objects that touch as they move past each other.

4
Q

Define terminal velocity

A

Terminal velocity is the constant velocity of a falling object when the force of air resistance equals the force of gravity.

5
Q

Define projectile motion

A

Projectile motion is the curved path of an object in free fall after it is given an initial forward velocity.

6
Q

Define inertia

A

Inertia is the tendency of an object to resist a change in its motion.

7
Q

Define mass

A

Mass is a measure of the inertia of an object, which depends on the amount of matter the object contains.

8
Q

Define weight

A

Weight is the force of gravity acting on an object.

9
Q

Define momentum

A

Momentum is the product of an object’s mass and its velocity.

10
Q

Define electromagnetic force

A

Electromagnetic force is a force associated with charged particles, which has two aspects, electric force and magnetic force.

11
Q

Define strong nuclear force

A

Strong nuclear force is the powerful attractive force that binds protons and neutrons together in the nucleus.

12
Q

Define weak nuclear force

A

Weak nuclear force is a powerful attractive force that acts over a short range and affects all particles.

13
Q

Define gravitational force

A

Gravitational force is an attractive force that acts between any two objects.

14
Q

Define centripetal force

A

Centripetal force is a force that continuously changes the direction of an object to make it move in an orbit.