o 11% OO Verizon LTE 5:30 PM K unfiled H115FNL.17F.doc PRIVATE Part I 1.What are
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o 11% OO Verizon LTE 5:30 PM K unfiled H115FNL.17F.doc PRIVATE Part I 1.What are the SI units for the following physical quantities: force energy, power pressure angular momentum Write down these units in terms of kg, m and s. 2 What are the values and dimensions for the following physical constants in SI units: g, the acceleration due to gravity; the gravitational the constant universal gas Constant; the density of water and the specific heat capacity of water. 3. The motion of a long jumper in one of his jumps is described by the equations (in SI units) xR 2.0 10.0 t, 4.0 t 4.9 t a) What are his initial position and velocity (at t 0 s) b) What is his acceleration (a x, a y) during the jump c) What are the equations for his velocity as functions of time d) What the equation for the time when he is at the highest point? e) What is the equation for the time when he reaches the ground A box of weight 200 N is at rest on horizontal surface. A horizontal force of 120 N is required to set the box in motion and a horizontal force of 80 N is required to keep it moving at constant speed What are the coefficients of static friction and kinetic friction To Do Notifications MessagesExplanation / Answer
1.
Unit of force = N = kg-m/sec^2
Unit of energy = J = kg-m^2/sec^2
Unit of power = W = kg-m^2/sec^3
Unit of angular momentum = kg-m^2/sec
2.
g = 9.81 m/sec^2
G = 6.67*10^-11 m^3/(kg-sec^2)
R = 8.314 kg-m^2/(mol-K-sec^2)
rho = 1000 kg/m^3
Cw = 4.186 J/(kg-K)
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