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A car moves with zero initial velocity up to a velocity of 5 m/s with an acceleration of 10 m/s2. The distance covered is
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- At t=0, a particle starts with an initial velocity of 10 i m/s and accelerates uniformly at (-2.0 i +4.0 J) m/s^2. What is the speed of particle at t=5s? 1- 32m/s 2- 30 m/s 3- 28 m/s 4- 20 m/s 5- 10 m/sA pilot ejects from his aircraft and falls 80 m from the ground without friction. Whenhe opens his parachute, he decelerates at 3.5 m/s2. The pilot hits the ground at 5 m/s.How long was the pilot in the air and at what height did he begin his fall?In World War II, there were several reported cases of airmen who jumped from their flaming airplanes with no parachute to escape certain death. Some fell about 20,000 feet (6000 m), and some of them survived, with few life- threatening injuries. For these lucky pilots, the tree branches and snow drifts on the ground allowed their deceleration to be relatively small. If we assume that a pilot's speed upon impact was 123 mph (54 m/s), then what was his deceleration? Assume that the trees and snow stopped him over a distance of 3.0 m.
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- Peacock mantis shrimps (Odontodactylus scyllarus) feed largely on snails. They shatter the shells of their prey by delivering a sharp blow with their front legs, which have been observed to reach a peak speed of 23 m/s. What is this speed in kilometers per hour?A train has an initial speed of 10 m/sec. It is picking up speed with an acceleration of 6 m/sec/sec over the next 5 seconds. Give the speed of the car in m/sec at 0 seconds only. t = 0 t = 1 t = 2 t = 3 t = 4 t = 5 After reaching the speed you calculated at t = 5, the bus immediately begins to decelerate at 2 m/sec/sec for the next 5 seconds (until t = 10 seconds). Find the speed at t=6,7,8, and 9. t = 6 t = 7 t = 8 t = 9 t = 10While dusting a bookshelf at the local college's huge library, Jean accidentally knocks a book off of the shelf that is 3.68 meters high. Neglecting air resistance and assuming the book has an initial velocity of 0 m/s, what speed will the book have right before it hits the ground?
- A bungee jumper attains a speed of 30 m/s just as the bungee cord begins to stretch. If the period of stretch is 2 s while coming to a halt, what is the jumpers average deceleration?A rock is thrown from a bridge 18 m above water with an initial speed of 15.5 m/s. Assuming negligible air resistance, what is the speed that the rock hits the water with, in meters per second?A bus travels the 100 miles between A and B at 50 mi/h and then another 100 miles between B and C at 70 mi/h. The average speed of the bus for the entire 200-mile trip is: