1. An object travels at a constant 10 m/s. Calculate the linear momentum of the object.
Known :
Mass (m) = 1 kg
Velocity (v) = 10 m/s
Wanted : linear momentum (p)
Solution :
Formula of the linear momentum :
p = m v
p = linear momentum, m = mass, v = velocity
The linear momentum :
p = m v = (1)(10) = 10 kg m/s2
[irp]
2. A 2-kg block and a 4-kg blocks moves at a constant 20 m/s. What is the linear momentum of the blocks.
Known :
Mass of block A (mA) = 2 kg
Mass of block B (mB) = 4 kg
Velocity of block A (vA) = 20 m/s
Velocity of block B (vB) = 20 m/s
Wanted : Linear momentum of block A (pA) and linear momentum of block B (pB)
Solution :
Linear momentum of block A :
pA = mA vA = (2)(20) = 40 kg m/s
Linear momentum of block B :
pB = mB vB = (4)(20) = 80 kg m/s
[irp]
3. A 2-kg block moves at a constant 2 m/s and a 2-kg block moves at a constant 4 m/s. Determine the linear momentum of the blocks.
Known :
Mass of block A (mA) = 2 kg
Mass of block B (mB) = 2 kg
Velocity of block A (vA) = 2 m/s
Velocity of block B (vB) = 4 m/s
Wanted : the linear momentum of blocks
Solution :
Linear momentum of block A :
pA = mA vA = (2)(2) = 4 kg m/s
Linear momentum of block B :
pB = mB vB = (2)(4) = 8 kg m/s
[irp]
4. A 5-kg object at rest. What is the linear momentum of the momentum.
Known :
Mass (m) = 5 kg
Object’s velocity (v) = 0
Wanted : the linear momentum (p)
Solution :
p = m v = (5)(0) = 0
[wpdm_package id=’1155′]
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