YouTube Lecture # 60

1. 1
Find the momentum, kinetic energy, and total energy of a
proton moving at a speed of 0.756c.
Helping Tools
No.1

2. 2
No.2
No.3

3. 3
No.4

4. 4
Solution
2
2 2
2 2
2
938.27205 0.756
(0.756 )
1 1
709.33 709.33 709.33
1 0.571 0.429
1 (0.756)
709.33
1082.95
0.655
Momentum
MeV
X c
mu c
p
u c
c c
MeV MeV MeV
c c c
MeV
MeV
c
c
= =
− −
= = =
−
−
= =

5. 5
2
2
2
Kinetic Energy
1
938.27
938.27
0.655
1432.47 938.27
494.203
mc
K mc
u
c
MeV
MeV
MeV MeV
MeV
= −
−
= −
= −
=

6. 6
2
2
2
2
Total Energy
938.27
0.655
1
1432.47
mc MeV
E K mc
u
c
MeV
= + = =
−
=
The End