1)If the mass of an object is 0.412 kg and its velocity is 0.436 m/s right, what

Question

1)If the mass of an object is 0.412 kg and its velocity is 0.436 m/s right, what is the
momentum? Note: Consider the positive x axis to be to the right. Give your
answer in unit vector notation.

Prelab 2
If the mass of an object is 0.412 kg and its velocity is 0.436 m/s left, what is the
momentum? Give your answer in unit vector notation.

Prelab 3
The mass of an object is (0.412 +/-0.009) kg and its velocity is (0.436 +/- 0.008)
m/s left. What is the magnitude of the momentum and its uncertainty

Explanation / Answer

1) magnitude of momentum = 0.412kg x 0.436m/s = 0.180kgm/s

if to the right means the positive x axis, we would write this vector as

+0.180 i where is the unit vector in the x direction

2) magnitude of momentum = 0.412kg x 0.436m/s = 0.180kgm/s

if to the left means the negative x axis, we would write this vector as

-0.180 i where is the unit vector in the x direction

3) magnitude of momentum = (0.412kg x 0.436) +/- (0.009*0.008)m/s = 0.180 +/- 7.2*!0-5 kgm/s

if to the left means the negative x axis, we would write this vector as

-[0.180 +/- 7.2*!0-5]i where is the unit vector in the x direction

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