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- Check Your Understanding If the displacement vector of a blue fly walking on a sheet of graph paper is D=(5.00 i3.00 j)cm , find Its magnitude and direction.Check Your Understanding If Trooper runs 20 m west before taking a rest, what is his displacement vector?Answer the following: Since all of the particle’s acceleration is in the ________ direction, none of its acceleration is in the ______. Therefore, the particle’s speed is________.
- Derive kinematic equatio ns for con s tant acceleration case.A motocyclist rigths an a given distance due north, rights twice that far to the west at the end of the trip the direct distance from the starting point is 112meters. What is the lenght if each lenght on the trip, in what direction is the end point with respect due to north?Can the magnitude of a particle’s displacement be greater that the distance traveled?
- If an object has a constant x -component of velocity and suddenly experiences an acceleration at an angle of 70 in the x direction, does the x -component of velocity change?If someone is riding in the back of a pickup thick and throws a softball straight backward, is it possible for the ball to fall straight down as viewed by a person standing at the side of the road? Under what condition would this occur? How would the motion of the ball appear to the person who threw it?If an object has a constant x -component of the velocity and suddenly experiences an acceleration in the y direction, does the x -component of its velocity change?
- Find the displacement of a hiker who walks if he ttavrls 3.50km north, and then walks 3.00km westCan a goalkeeper at her/ his goal kick a soccer ball intothe opponent’s goal without the ball touching the ground? Thedistance will be about 95 m. A goalkeeper can give the ball aspeed of 30 m/sA locomotive composition, with a constant speed of 75 km/h, moves in thewestbound for fifty minutes, then in a direction that makes an angle of 25° to the west with the north direction, for 35 min and finally in the eastbound for another 40 min. Determine:(a) the module of the average composition speed, in km/h, during that journey;b) the angle of the average speed of the composition, in relation to the first direction of the trip.