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All questions pictured don't have to go into detail how to solve just the steps please. Thanks 1.(a) How much work is done to move
All questions pictured don't have to go into detail how to solve just the steps please. Thanks
1.(a) How much work is done to move a 1.80 X 10-kg Chevrolet Tahoe from rest to 35.2 m/s on a level road? (b) If this takes place over a distance of 251 m, what is the average net force applied to the car? 2. A carte with a mass of 155 kg sitting on a flatbed truck which is moving at an acceleration of a = 2.78 m/s. Suppose that the crate does not slip as the truck undergoes a displacement, whose magnitude is r = 111 m. Determine the total work done on the crate by all of the forces acting on it. 3. A motorcyclist is trying to leap across a canyon by driving horizontally off the higher side of the canyon at a speed of 78.0 m/s. If air resistance is neglected and the difference in height on two sides of the canyon is 252 m, what is the speed of the motorcycle as it reaches the lower side of the canyon? 4. A 0.0850-kg arrow is fired horizontally. If the bowstring exerts an average force of 89.0 N on the arrow over a distance of 0.782 m, with what speed does the arrow leave the bow? 5. A 0.0500-kg golf ball heads off from the tee with an initial speed of 78.2 m/s and reaches to its maximum height of 37.8 m. If air resistance is neglected, (a) What is the kinetic energy of the ball at the pinnacle of its trajectory? (b) What is its speed when it is 5.60 m below the pinnacle point? 6. A projectile of mass m = 1.80 X 104 kg is launched vertically upward from the ground with an initial speed of 29.8 m/s. (a) If air resistance is ignored, how high would it go? (b) If the projectile rises to a height of 24.5 m, what is the average force exerted on the projectile by the air? 7. A horizontal force of magnitude 356 N is employed to push a 78.0-kg block a distance of 18.6 m on a rough horizontal surface. If the block moves at a constant speed, (a) What is the work done by the 356-N force? (b) What is the coefficient of kinetic friction between the block and the rough surface? 8. A shopper at the Fries' market place pushes a 13.0-kg shopping cart at a constant velocity for a distance of 58.7 m on a level surface. He pushes in a direction 24.5 below the horizontal. A 53.8 N frictional force opposes the motion of the cart.
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