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A motorcyclist intends to perform a stunt in which he jumps a river 25 meters wide. The motorcyclist must jump from a cliff on one side to a cliff 20 meters lower on the other side. The motorcyclist approaches the cliff's edge at a speed of 50 meters per second. To determine if he will successfully make the jump, answer the following questions:a. How long will he be in the air?b. How far will he travel in a horizontal direction?c. Will he make the jump?
A 1000-kg car travelling at a speed of 32 m/s skids to a halt on wet concrete where f_k = 0.3. How long are the skid marks.
A car with a total mass of 1.65*103 kg has wheels ofradius 35.0 cm and moment of inertia 0.760 kg ·m2. Suppose that the wheels were then replaced byoversized wheels of the same shape and made of the same materials, but 49% wider and witha 49% larg..
A 4.00 kg mass is connected by a light cord to a 3.00 kg mass on a smooth surface. The pulley rotates about a frictionless axle and has a moment of inertia of .5 kg m2 and a radius of .30 m.
A 35 N hand and forearm are held at a 45 degree angle to the vertically oriented humerus. how much force must be exerted by the forearm flexors to maintain this position
A scientific instrument that weighs 78.4 on the earth weighs 29.7 at the surface of Mercury. What is the acceleration due to gravity on Mercury
when an ambulance is stationary the siren gives off a sound at a frequency of 500 hz. in answering the following
Concept Simulation 5.1 reviews the concepts that are involved in this problem. A child is twirling a 0.0282-kg ball on a string in a horizontal circle whose radius is 0.109 m. by what factor does the centripetal force increase
A block of mass 3.0 kg slides toward the right on a frictionless surface with v0 = 7.5 m/s. What is the position xf where the block stops
A clown at a birthday party has brought along a helium cylinder,with which he intends to fill balloons. What is the maximum number of people who will get a balloon
A certain concrete will support a maximum compressive stress of 1.12 107 N/m2 before being crushed. A column of uniform width is to be made with this concrete. How tall can the column be if the stress in it at any point is not to exceed one fifth the..
After flying for 19 min in a wind blowing 47 km/h at an angle of 17° south of east, What is the speed of the airplane relative to the air
After being accelerated to a speed of 1.26×105 m/s, the particle enters a uniform magnetic field of strength 2.00 T and travels in a circle of radius 35.0 cm (determined by observing where it hits the screen). The results of this experiment allow one..
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