What is the coefficient of restitution (e)? a) Ratio of final to initial relative velocities b) Ratio of initial to final relative velocities c) Ratio of final to initial velocity of a body d) Product of initial to final relative velocities
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What is the coefficient of restitution (e)?
a) Ratio of final to initial relative velocities
b) Ratio of initial to final relative velocities
c) Ratio of final to initial velocity of a body
d) Product of initial to final relative velocities
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- A 62.5 kg person is riding in a car moving 19 m/s (assume it is in a positive direction) when the car runs into a bridge abutment. Part A) calculate the horizontal component of the average force, in newtons, on the person if he stopped by a padded dashboard that compressed an average of .85cm. Part B) calculate the horizontal component of the average force, in newtons, on the person if he is stopped but an air bag that compresses an average of 13.5 cmWhich of these statements are true? Explain why below: a) If an elastic collision occurs, then the change in total momentum is unpredictable. b) If an elastic collision occurs, then the total momentum is increased by the collision. c) If an elastic collision occurs, then the total momentum is decreased by the collision. d) If an elastic collision occurs, then the total momentum remains essentially unchanged by the collision. Explanation:___________________________________________________________________________________________________________________________________________________________________________________________________________________________________Data m1=2 Kg m2=3 Kg u(kinetic)=0.1 Calculate in the system: a-) acceleration b-) tension
- In a rail yard a freight train car moving at speed v strikes two identical cars at rest (see figure below). Neglecting any resistance to rolling, find the common velocity of the three-car system after coupling has been completed and any associated vibrations have died out. State you answer in terms of the leftmost car's velocity v. You can assume all three cars have equal mass.Assume that the mass of the bullet, m1, is 4.97 g, the mass of the pendulum, m2, is 1.029 kg, and h is 4.71 cm. (a) Find the velocity of the system after the bullet embeds in the block. m/s(b) Calculate the initial speed of the bullet. m/sA bullet of mass 3.6 g strikes a ballistic pendulum of mass 1.0 kg. The center of mass of the pendulum rises a vertical distance of 12 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed. Number i Units