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A world-class sprinter accelerates to his maximum speed in 4 second. He then maintains this speed for the remainder of a 100 meter race, finishing with a total time of 9.1 second.
(a) Compute the runner average acceleration during the first 4 sec?
(b) Compute average acceleration during the last 5.1 sec?
(c) Find what is his average acceleration for the entire race?
A solid sphere of mass 4.0kg and radius of 0.12m is at rest at the top of a ramp inclined 15degrees. It rolls to the bottom without slipping. What is the liner speed of the sphere
A crate of mass 11.5 kg is pulled up a rough incline with an initial speed of 1.50 m/s. The pulling force is 100 N parallel to the incline, What is the change in kinetic energy of the crate
As a new electrical technician, you are designing a large solenoidto produce a uniform 0.160 T magneticfield near the center of the solenoid. You have enough wire for4875 circular turns. This solenoid must be 1.35 m long and25.0 cm in diameter.
The distance between the moon and the earth is 384,403 km, The orbital period of the moon is about 27.32 days. Calculate the average orbital speed in m/s of the moon
A 2.0 kg mass starts from rest and slides down an inclined plane 0.80 m long in 0.50 s. What net force is acting on the mass along the incline?
A 30.0-kg gun is resting on a frictionless surface. The gun fires a 50.0-g bullet with a muzzle velocity of 310.0 m/s. Compute the moment a of the bullet and the gun after the gun is fired.
An eastbound subway train accelerates from rest at 1.22 m/s2 along a straight track. How far apart are the trains when the eastbound subway train is traveling at the same speed as the westbound train
find how much energy is needed to remove one of the neutrons from a 3h atom to yield a 2h atom plus a neutron.the rest
A child of mass m sits in a swing supported by two chains, each of length R. The tension in each chain at the lowest point is T. Find the child's speed at the lowest point
a slingshot consists of a light leather cup containing a stone. the cup is pulled back against two parallel rubber
Identify the magnitudes of the tension force t in the deltoid muscle and the force s of the shoulder on the humerus (upper-arm bone) to hold the arm in the position shown.
Consider a steam turbine in which the steam expands adiabatically. If the turbine consumes 1.00 kg steam each second, calculate the temperature of the steam at the exhaust
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