In the experiment on rectilinear motion (1D Motion), the ramp should have negligible friction to maintain a uniform acceleration across it. O True False
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- A 16-lb weight is attached to a frictionless spring, that in turn is suspendedfrom the ceiling. The weight stretches the spring ft and comes to rest in itsequilibrium position. The weight is then pushed up 1 foot and released with anupward velocity of 6 ft/sec. Find the initial value problem that describes the motion ofthe weight, and solve it, writing your solution in the form u(t) = R cos( ω0t - δ )By using dimensional analysis, identify two non-dimensionnumbers in which the drag coefficient is a function of them and explain how these two will effect on drag coefficient.Please show clear work for finding the range and finding the final velocity on the ground using the provided formulas
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- Very large accelerations can injure the body, especially if they last for a considerable length of time. One model used to gauge the likelihood of injury is the severity index ( SI ), defined as SI=a5/2t . In the expression, t is the duration of the accleration, but a is not equal to the acceleration. Rather, a is a dimensionless constant that equals the number of multiples of g that the acceleration is equal to. In one set of studies of rear-end collisions, a person's velocity increases by 16.6 km/h with an acceleration of 33.0 m/s2 . Let the +x direction point in the direction the car is traveling. What is the severity index for the collision?SI = ?How far d does the person travel during the collision if the car was initially moving forward at 5.20 km/h?d = ? mConsider a runner moving on the positive direction with an initial Velocity of 6.4 m/s slows down at a constant rate of -0.4 m/s squared over a period of 2 seconds. What distance does she travel during this process? Is there any way you could help me solve for the velocity here when taking friction into account?