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Science 3.3 and 3.4: Designing a Better Seatbelt and Newton's 2nd Law of Motion
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Gravity
Terms in this set (20)
describes the factors that determine an object's acceleration
Newton's second law of motion
an object's acceleration is equal to the net force on the object divided by its mass
Newton's Second Law of Motion states that...
look at the different relationships between acceleration, force, and mass
to better understand N2LoM...
one factor determines how much an object accelerates is the strength of the net force acting on it.
acceleration and force 1
the greater the net force acting on the object, the greater the acceleration of the object
acceleration and force 2
a factor that affects how much an object accelerates is the object's mass
acceleration and mass 1
if identical net forces act on two objects that have different masses, the object that has the larger mass will have a smaller acceleration
acceleration and mass 2
a = F/m
Newton's 2nd Law of Motion equation
hold the upper and lower parts of a person's body in place during a collision
criteria of Nils Bohlin's solution to safer seatbelts 1
ease of use and comfort
criteria of Nils Bohlin's solution to safer seatbelts 2
is should be easy to make and inexpensive
constraints of Nils Bohlin's solution to safer seatbelts
Nils Bohlin's solution to safer seat belts
what is the three point solution?
describes the three places that the seat belt is secured to the car, which can be done with one hand
three point solution
it represents what Newton's 2nd Law of Motion states
explain a = F/m
engineering design; precisely; problem
an important step in any ____________________ is to _________ state the ________________ to be solved (pt 1)
criteria and constraints; design solution
to do this, engineers describe the ________________ and _____________ of the __________________ (pt 2)
proportional change in acceleration
when mass stays the same, any change in force will result in a _________________________
inverse change in acceleration
when force stays the same, any change in mass will result in an ________________________________
500N it has the greatest net force
for an object with a given mass, which of the following net forces would determine the greatest acceleration? 5N, 50N, or 500N?
200kg because it has less mass
if the forces acting on two objects are the same, which object has a greater acceleration? an object that is 200 kg or 400 kg?
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