At the CERN particle accelerator in Geneva, Switzerland, protons are accelerated to a speed of 0.999999972c. In the tunnel next to the beamline a worker drops a wrench from a height of 1.8 m above the floor. Part A How much time elapses before the tool hits the floor from the worker's frame of reference? Express your answer to three significant figures and include appropriate units. ☐ о με Value Units Submit Request Answer ་ Part B ? How much time elapses as measured by a proton in the accelerator? Express your answer to three significant figures and include appropriate units. на Value ? Units Submit Request Answer

Each of the following vectors is given in terms of its xx- and yy-components.

Im having difficulty with these problems.

I think 44 is supposed to be 34

Problem 4: Speed deamplifier. In the figure above on the right, block 1 of mass m1 slides along an x-axis on a frictionless floor at speed 4 m/sec.Then it undergoes a one-dimensional elastic collision with stationary block 2 of mass m2 = 2m1. Next, block 2 undergoes a one-dimensional elastic collision with stationary block 3 of mass mz = 4m1. What then is the speed of block 3? Answer: 16 m/sec or 1.78 m/sec.