# data[].attributes.body
A 50 kg mass is sitting on a frictionless surface. An unknown constant force pushes the mass for 2 seconds until the mass reaches a velocity of 3 m/s.
a) What is the initial momentum of the mass?
b) What is the final momentum of the mass?
c) What was the force acting on the mass?

# data[].attributes.body
a)0
b)150
c)75N

# data[].attributes.body
a) 0
b) 150
c) 75N

# data[].attributes.body
a.0
b.150
c.75N

# data[].attributes.body
a. 0
b. 150
c. 75

# data[].attributes.body
b)150
c)75

# data[].attributes.body
a. 0
b.150
c.75

# data[].attributes.body
a)0
b)150
c)75N

# data[].attributes.body
B) 150
C)75

# data[].attributes.body
a) 0
b) 150
c) 75

# data[].attributes.body
a) 0
b) 150
c) 75N

# data[].attributes.body
a. 0
b. 150
c. 75N

# data[].attributes.body
a. 0
b 150
c. 75N

# data[].attributes.body
a) 0
b) 150
c) 75N

# data[].attributes.body
a) 0
b) 150
c) 75

# data[].attributes.body
Why is follow through important in sports?

# data[].attributes.headline
To release more force on what you're hitting

# data[].attributes.subject
To release more force on what you're hitting

# data[].attributes.headline
if the force is applied longer then the momentum will be greater

# data[].attributes.subject
if the force is applied longer then the momentum will be greater

# data[].attributes.body
If you don't follow through the force will be different because you apply force for a longer period the greater the impulse.

# data[].attributes.body
you are applying a force for a longer period of time when you follow through.

# data[].attributes.body
To follow through means you apply more force for a longer amount of time.

# data[].attributes.headline
Its important because it can release more force on the object

# data[].attributes.subject
Its important because it can release more force on the object

# data[].attributes.body
you apply force for a longer time period so you produce a larger impulse

# data[].attributes.body
by following through more force is released on an object

# data[].attributes.body
You keep applying force to the object for a longer time

# data[].attributes.body
It evenly distributes a powerful force

# data[].attributes.body
The longer force you apply the larger the momentum.

# data[].attributes.body
You will apply more force on what you are hitting.

# data[].attributes.body
0
150
75

# data[].attributes.body
The longer forces is applied the more momentum it has

# data[].attributes.body
Explain how airbags in a car save lives
Answer in terms of momentum and impulse

# data[].attributes.body
The air bag reduces the amount of force at once and not hitting as hard of an object

# data[].attributes.headline
They stretch out the amount of time the force is transferred making the impact softer

# data[].attributes.subject
They stretch out the amount of time the force is transferred making the impact softer

# data[].attributes.body
The air bag changes our momentum from having such a big impact stop. The softness to decreases our ending force to avoid such damages to ourselves.

# data[].attributes.body
The air bag changes your momentum and causes you to have a softer impact against the steering wheel.

# data[].attributes.body
It makes it so that your change in momentum occurs over a greater period of time, so the person expierences less force on them.

# data[].attributes.body
With the air expanding, it expands the amount of time it takes your head to hit the hard surface, meaning force will decrease

# data[].attributes.body
the airbag will increase the time from hitting the steering wheel so the force decreases

# data[].attributes.body
decreases the force so the impulse would be less than with the original force when collision happens

# data[].attributes.body
The airbag changes the momentum giving you a softer impact when you crash

# data[].attributes.headline
The airbag slows forward motion by reducing the impact since an airbag is softer than a solid material.

# data[].attributes.subject
The airbag slows forward motion by reducing the impact since an airbag is softer than a solid material.

# data[].attributes.body
It helps save life's because they reduce the amount of momentum at the time of impact.

# data[].attributes.body
The impact is softened by airbags as it slows down the momentum

# data[].attributes.body
They change your momentum upon hitting them causing less impact than no airbag

# data[].attributes.body
The airbags help provide a force over time to stop the momentum of the passenger.

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a) In terms of inertia, why is it helpful to have a large time when slowing your car in an accident?

b) In terms of inertia, why is it helpful to have a large time when hitting a ball in baseball or golf?

# data[].attributes.body
Inertia is the property of matter that says that something in rest will stay at rest unless acted on by on external force or stay in motion, so in an accident you want to have a longer period of time to slow down as your car will  continue to move, but you don't want to slow down too fast or else the force on the people in the car will be dangerous.
B.The ball will stay static unless acted on by a force, you want as much force

# data[].attributes.body
a) Because you want the velocity to be less and with more time and the inertia is slowed down with more time
b) To hit something harder and further you want to have contact with it for a as long as possible and with as much force as possible

# data[].attributes.body
a) inertia is an object's resistance to change in motion. So a larger time would decrease change in motion
b) Larger time would increase change in motion

# data[].attributes.body
a) if you extend time then force decreases so the impact wont be as bad
b)

# data[].attributes.body
a) inertia is an objects ability to change motion, ex. direction. A car is able to change direction better if it is moving at a lower speed.
b) having more time allows a more impactful force.

# data[].attributes.body
A) the larger the time the lesser the force which will lead to less damage
B)

# data[].attributes.body
a) Extending the time allows the force to be weakened.
b) Allowing a greater time lets the ball have a greater force.

# data[].attributes.body
A. The longer the time slowing down, the inertia decreases.
B. A longer time building up inertia on the ball will have it pick up more speed.

# data[].attributes.headline
A) for the car you have more time to slow your inertia to protect the occupants.

# data[].attributes.subject
A) for the car you have more time to slow your inertia to protect the occupants.

# data[].attributes.body
B) you have more time to build up inertia to strike the ball with as much force as possible

# data[].attributes.body
With interia, you want a large amount of time to slow down momentum to decrease force. While Baseball, you want to have a large amount of time to hitting it to keep up the momentum

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A) You want more time because the the impact will be weaker
B) you want more time for the ball to pick up speed and force

# data[].attributes.body
a) with inertia the longer it takes the less amount of force
b) it is helpful to have a large time because then you will get a larger force

# data[].attributes.body
A) the more time it has the less force the car has. Inertia causes it to take longer thus giving it less force
B) the larger the time is the more force it appears to increase.

# data[].attributes.body
a) What is the impulse on the driver due to the collision?

b) The collision lasts for 14ms. What is the magnitude of the average force on the driver?

# data[].attributes.body
The airbags change momentum causing less impact

# data[].attributes.body
a. 1600 Kgm/s
b. 114.3N

# data[].attributes.body
B)114.3N

# data[].attributes.body
114285N

# data[].attributes.body
A. 1600 kgm/s
B. 114.3 N

# data[].attributes.body
a)1600
b) 114.3

# data[].attributes.body
1600
114

# data[].attributes.body
b) 114.28

# data[].attributes.body
A) 1600 kg*m/s
B) 114.29 N

# data[].attributes.body
a) -910.5i^-3494.6j^
b) 11432 N

# data[].attributes.body
a) 1600 kgm/s
b) 114.3 N

# data[].attributes.body
a)1600
b)114

# data[].attributes.body
a)0
b)150
c)75

# data[].attributes.body
b. 114.3 N

# data[].attributes.body
-5000

# data[].attributes.body
-5000

# data[].attributes.body
0.05N

# data[].attributes.body
-500

# data[].attributes.body
Explain conservation of energy

# data[].attributes.body
Energy cannot be created nor destroyed, only altered. K+U=K+U

# data[].attributes.body
energy cannot be created nor destroyed

# data[].attributes.body
Ki+Ui=Kf+Uf, energy cannot be creaed or destr

# data[].attributes.body
conservation of energy is that energy can't be created or destroyed but only transferred
ui+ki=uf+kf

# data[].attributes.body
Energy cannot be created or destroyed, it can only be changed from one form to another.  There is K and U gravitional/spring.

# data[].attributes.body
conservation of energy is energy that can not be created or destroyed and can change forms.

# data[].attributes.body
A principle stating that energy cannot be created or destroyed, but it can be altered.
ui+ki=uf+kf

# data[].attributes.headline
energy can not be created or destroyed K1+U1=K2+U2

# data[].attributes.subject
energy can not be created or destroyed K1+U1=K2+U2