A 5 kg object is moving with a velocity of 5 ms to the east did its velocity change 28 ms to the west find the impulse given to the object
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A 5 kg object is moving with a velocity of 5 ms to the east did its velocity change 28 ms to the west find the impulse given to the object
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A 5 kg object is moving with a velocity of 5 ms to the east did its velocity change 28 ms to the west find the impulse given to the object
Answer:
Answer: Answer: (a) -16.7 N s; (b) -167 N
Given: m = 0.530 kg; vi = 18.0 m/s; vf = 13.5 m/s; t = 0.100 s
Find: (a) Impulse, (b) Force
(a) Impulse = Momentum Change = m•Delta v = m•(vf - vi)= (0.530 kg)•( -13.5 m/s - 18.0 m/s)
Impulse = -16.7 kg•m/s = -16.7 N•s
where the "-" indicates that the impulse was opposite the original direction of motion.
(Note that a kg•m/s is equivalent to a N•s)
(b) The impulse is the product of force and time. So if impulse is known and time is known, force can be easily determined.
Impulse = F•t
F = Impulse/t = (-16.7 N s) / (0.100 s) = -167 N
where the "-" indicates that the impulse was opposite the original direction of motion.
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