391 Words2 Pages

January 13
2) ETA = 1
V1 10 m/s V2 0 m/s
V11 0 m/s V21 10 m/s
H1 100 kg (m/s) H2 0 kg (m/s) Total H =H1 +H2 = 100 kg (m/s)
H11 0 kg (m/s) H21 100 kg (m/s) Total H1 =H11 +H21 = 100 kg (m/s)
KE1 500 J KE2 0 J Total KE = KE1+KE2 = 500 J
KE11 0 J KE21 500 J Total KE = KE11+KE21 = 500 J
Momentum and energy are conserved as the numbers are equal before and after the collision.
3) ETA = .7
V1 10 m/s V2 0 m/s
V11 1.5 m/s V21 8.5 m/s
H1 100 kg (m/s) H2 0 kg (m/s) Total H =H1 +H2 = 100 kg (m/s)
H11 15 kg (m/s) H21 85 kg (m/s) Total H1 =H11 +H21 = 100 kg (m/s)
KE1 500 J KE2 0 J Total KE = KE1+KE2 = 500 J
KE11 11.25 J KE21 361.25 J Total KE = KE11+KE21 = 362.5 J
Momentum is conserved but not energy following the collision.
4) ETA = .3
V1 10 m/s V2 0 m/s
V11 3.5 m/s V21 6.5 m/s
H1 100 kg (m/s) H2 0 kg (m/s) Total H =H1 +H2 = 100 kg (m/s)
H11 35 kg (m/s) H21 65 kg (m/s) Total H1 =H11 +H21 = 100 kg (m/s)
KE1 500 J KE2 0 J Total KE = KE1+KE2 = 500 J
KE11 61.25 J KE21 211.25 J Total KE = KE11+KE21=272.25 J
Momentum is conserved but not energy following the collision.
5) ETA = 0
V1 10 m/s V2 0 m/s
V11 5 m/s V21 5 m/s
H1 100 kg (m/s) H2 0 kg (m/s) Total H =H1 +H2 = 100 kg (m/s)
H11 50 kg (m/s) H21 50 kg (m/s) Total H1 =H11 +H21 = 100 kg (m/s)
KE1 500 J KE2 0 J Total KE = KE1+KE2 = 500 J
KE11 125 J KE21 125 J Total KE = KE11+KE21=250 J
6) A low coefficient of restitution constitutes high energy loss, while a high coefficient of

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