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 impulse-momentum 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
Impulse is integral F dt , change in momentum
Impulse is average force times time of interaction
Impulse = F t
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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
is this from k12
1. Impulse is the change in momentum of an object.
2. The average force times the time of interaction equals the change in momentum.
3. impulse = Ft
1. The correct answer is: Impulse is the change in momentum of an object. Impulse and momentum are related in that impulse is the product of the force exerted on an object and the time interval over which the force acts. This impulse causes a change in the object's momentum. Mathematically, impulse is calculated as the product of force and time: impulse = force × time. Momentum is defined as the product of an object's mass and its velocity: momentum = mass × velocity. Therefore, impulse and momentum are related in terms of the change in momentum resulting from the application of a force over a certain time interval.
2. The correct answer is: The average force times the time of interaction equals the change in momentum. This statement is known as the impulse-momentum theorem. According to this theorem, the change in momentum of an object is equal to the product of the average force exerted on the object and the time interval over which the force acts. Mathematically, this can be expressed as: impulse = average force × time interval = change in momentum.
3. The correct answer is: impulse = Ft. The equation for impulse is given by the product of force and time. This equation represents the change in momentum of an object resulting from the applied force over a certain time interval. The unit of impulse is Newton-second (N·s), which is equivalent to kg·m/s, the unit of momentum.