Posted by Anna on Monday, January 27, 2014 at 2:32pm.
1. How are impulse and momentum related?
(Points : 1)
Impulse is the change in momentum of an object.
Momentum is the change in impulse acting on an object.
Impulse and momentum are always equal in magnitude.
Impulse and momentum are the same thing.
Question 2. 2. Which of these is a statement of the impulsemomentum theorem?
(Points : 1)
F = ma
The impulse is the average force times the time of interaction.
The average force times the time of interaction equals the change in momentum.
Impulse has units of momentum.
Question 3. 3. Which of the following is the equation for impulse?
(Points : 1)
impulse = ma
impulse = mv
impulse = Ft
impulse = p

Please help with Physics Quickly  Damon, Monday, January 27, 2014 at 3:34pm
Impulse is integral F dt , change in momentum
Impulse is average force times time of interaction
Impulse = F t

The way I think about it:
I do not really use
F = m a
I think
F = d/dt(mv) the rate of changer of momentum
(By the way, that works even when you get into special relativity and for objects whose mass is changing like rockets)
If m is constant then indeed
F = m dv/dt which is F = ma
but
my way
F = d (mv) /dt
so
F dt = d (mv) = impulse

Please help with Physics Quickly  Kylie, Friday, January 30, 2015 at 11:52am
is this from k12
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