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The first meters of a 100-meter dash are covered in 2 seconds by a sprinter who starts from rest and accelerates with a constant acceleration. The remaining 90 meters are run with the same velocity the sprinter had after 2 seconds.
a. Determine the sprinter's constant acceleration during the first 2 seconds.
b. Determine the sprinter's velocity after 2 seconds have elapsed.
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 62.12 diopters, How far is the blackboard from her eyes
Assume that a particle accelerator is used to move two beams of particles in opposite directions. obtain the magnitude of average current in this region
A rocket moves upward, starting from rest with an acceleration of 29.9 m/s2 for 3.31 s. It runs out of fuel at the end of the 3.31 s but does not stop. Evaluate how high does it rise above the ground?
When a nucleus of ^235 U undergoes fission, it breaks into two smaller, more tightly bound fragments. Calculate the binding energy per nucleon for the fission product
A rocket is fired straight up and accelerates upward at 12 m/s2 for 18 seconds. The rocket then runs out of fuel and coasts still going up. What is the package's speed when it hits the ground
q1. starting from rest a basketball rolls from the top of a hill to the bottom getting a translational speed of 7.36
You walk a brisk pace in a straight line to get to your car which is 1.0km away. After you get in your car, you drive back to your straight point at 20m/s. How fast were you walking
A fixed 16.9 centimeter diameter wire coil is perpendicular to a magnetic field 0.44T pointing up. Compute the average induced emf in the coil
Coasting along at 8.10 m/s, a 60.0 kilogram bicyclist on an 8.40 kilogram bicycle encounters a small hill. compute how much work was done on the bicyclist and her bike
An electron has a de Broglie wavelength ? = 7.0×10?10m, What voltage was needed to accelerate it to this speed and What is its speed
A proton accelerates from rest in a uniform electric field of 630 N/C. At one later moment, its speed is 1.60 m/s, Determine its kinetic energy at the end of this interval
A point charge of +7.6? C is located 0.27 m from a second point charge of -4.9? C. What is the absolute magnitude of the force on each charge
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