Two objects in a closed system collide while moving directly toward each other each has a mass of 1.00 kg and is moving at 1.80 m/s what is the total momentum after the collision?
A)1.80 kg m/s
B)0.00 kg m/s
C)0.90 kg m/s
D)3.60 kg m/s
The momentum of an object is given by the formula:
momentum = mass * velocity
For both objects, the mass is 1.00 kg and the velocity is 1.80 m/s.
So the initial momentum before the collision for each object is:
momentum = 1.00 kg * 1.80 m/s = 1.80 kg m/s
Since the two objects are moving directly toward each other, they have opposite velocities.
After the collision, the two objects will bounce back with the same speeds and opposite directions.
Therefore, the total momentum after the collision will be the sum of the individual momenta of the two objects.
Since their momenta have opposite directions, they cancel each other out.
So the total momentum after the collision is:
momentum = 1.80 kg m/s + (-1.80 kg m/s) = 0.00 kg m/s
The answer is B) 0.00 kg m/s.