How much work is required to stretch an ideal spring of spring constant (force constant) 40 N/m from x = 0.20 m to x = 0.25 m if the unstretched position is at x = 0.00 m?
A) 0.45 J
B) 0.80 J
C) 1.3 J
D) 0.050 J
Question 2
A puck with a mass m1 = 50 g moving at 1.0 m/s approaches a stationary puck with a mass m2 = 100 g on a frictionless air table, and they undergo a sudden two-dimensional elastic collision.
After the collision, both pucks have identical speeds, but travel in different directions. What is the angle between the original and final paths of puck with mass m1? A) 30
B) 60
C) 90
D) 120
E) 150
Muscle Strength of the Hip, Abduction with Opposing Force
Traction is the application of a pulling force to maintain bone alignment during fracture healing. D
Spring Beauty
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Overhead stretch for the shoulder muscles. Lean back to create the stretch using your body weight.
Stretch the hip in flexion. With one hand just above the knee and the other hand on the foot, gently ...