Physics

The study of the forces that cause objects and systems to move.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

NGSS.HS-PS2-4

A body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force.

• Newton's First Law of Emotion

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

The acceleration of a system is directly proportional to and in the same direction as the net external force acting on the system, and inversely proportional to its mass.

• Newton's First Law of Motion

• Newton's First Law of Emotion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

Tags

NGSS.HS-PS2-1

Whenever one body exterts a force on a second body, the first body experiences a force that is equal in magnitude and opposite in direction to the force that it exerts.

• Newton's Second Law of Emotion

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

Calculate the tension in the wire supporting the 70.0-kg tightrope walker.

• 3899 N

• 3900 N

• 3901 N

• 3902 N

Tags

NGSS.HS-PS2-1

A 63.0-kg sprinter starts a race with an acceleration of 4.20 m/s². What is the net external force on him?

• 265 N

• 266 N

• 267 N

• 268 N

Tags

NGSS.HS-PS2-1

Find the magnitudes of the forces F₁ and F₂ (respectively) that add to give the total force F_tot.

• 15 N and 10 N

• 18 N and 13 N

• 16 N and 11 N

• 11 N and 16 N

Tags

NGSS.HS-PS2-1

The tendency of an object to remain at rest or remain in motion.

Tags

NGSS.HS-PS2-1

The force due to gravity acting on an object of mass.

• Friction

• Weight

• Tension

• Normal Force

Tags

NGSS.HS-PS2-4

The pulling force that acts along a medium.