Forces and Newton's Laws - Introduction to Dynamics

Question 1

dynamics

Answer 1

• study of forces and torques and their effect on motion

Question 2

force (F)

Answer 2

• push or pull
• vector
• forces cause acceleration
• bigger force = bigger acceleration
• smaller accelerates with the same amount of force than the bigger object
• mass*acceleration

Question 3

inertia (m)

Answer 3

• resistance of an object to changes in motion
• how hard it is to get it moving (or to stop it)
• measured by mass

Question 4

acceleration

Answer 4

• force/mass

Question 5

Newton’s Second Law of Motion

Answer 5

• force = mass*acceleration
• cause of motion is force
• effect is that things start to move around
• the acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.