If Connor McGregor, Tim Tebow and a Cheetah were all in a 200 m running race, who would have the greatest momentum? Connor McGregor weighs 154 lbs and finished the race in 30 seconds. Tim Tebow weighs 255 lbs and finished the race in 24 seconds. The Cheetah has a mass of 71.4 kg and finished the race in 19seconds. Remember to convert the weight of the two human sprinters into their mass using the conversion given earlier in the lab.
If Connor McGregor, Tim Tebow and a Cheetah were all in a 200 m running race, who would have the greatest momentum? Connor McGregor weighs 154 lbs and finished the race in 30 seconds. Tim Tebow weighs 255 lbs and finished the race in 24 seconds. The Cheetah has a mass of 71.4 kg and finished the race in 19seconds. Remember to convert the weight of the two human sprinters into their mass using the conversion given earlier in the lab.
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Transcribed Image Text:9. If Connor McGregor, Tim Tebow and a Cheetah were all in a 200 m running race, who
would have the greatest momentum? Connor McGregor weighs 154 lbs and finished the
race in 30 seconds. Tim Tebow weighs 255 lbs and finished the race in 24 seconds. The
Cheetah has a mass of 71.4 kg and finished the race in 19seconds. Remember to convert
the weight of the two human sprinters into their mass using the conversion given earlier
in the lab.
10. What are the two ways to change linear momentum?
11. Superman has a linear momentum 30,000 kg*m/s, based on a mass of 100 kg and a
velocity of 300 m/s, what would be Superman's new momentum if:
a. His velocity is doubled? L
b. His velocity is tripled? L
c. His velocity is cut in half?L
d. His mass was doubled? L
e.
Both his velocity and mass were doubled? L
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Transcribed Image Text:Definitions and Equations:
Moment of Inertia (): Tendency to resist angular acceleration; the angular equivalent of mass.
In practical terms it is a measure of how hard it is to rotate an object or segment, like a baseball
bat or a body segment. It is the sum of the products of the mass (m) with the
distance from the axis of rotation (k2).
square
of its
• I= mk²
Linear Momentum (L):
L=mv (kg*m/s)
Converting weight to mass
1 lb. = 4.45 N
To convert a weight in Newton's into a mass in kg, divide the weight in Newton's by the
acceleration due to gravity (-9.81 m/s2)
If a person has a weight of -900 N (202.25 lbs.), you would calculate their mass by
dividing -900 N by -9.81 m/s2, m -900 N / -9.81 m/s2 = 91.74 kg
Grams to Kilograms
1000 g =1 kg
Table 1: Segment Length, Mass and Center of Mass Locations for Woman and Men
Segment
Length (cm)
Mass (%)
COM Location (%)
W
M
W
M
W
M
Upper Arm
27.51
28.17
2.55
2.71
57.54
57.72
Forearm
26.43
26.89
1.38
1.62
45.59
45.74
Hand
7.80
8.62
0.56
0.61
74.74
79.00
Thigh
36.85
42.22
14.78
14.16
36.12
40.95
Shank
43.23
43.40
4.81
4.33
44.16
44.59
Foot
22.83
25.81
1.29
1.37
40.14
44.15
Moment of Inertia: Example
A 60 kg collegiate swimmer is getting warmed-up for their 1650 yard race. She was told by her
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