3. The following values represent a particle with an x-coordinate that varies in time. Time, t (s) Distance, x (m) 7 -880 -1515 1 3 4 200 195 160 65 -120 -425
Q: equation for position x(1)
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- 4) Listen Position of a particle moving along the x-axis varies in time according to the following expression 772N x(1) = (-2,0 ""):* + (3.0"): What is its velocity at t=2.0 s? O- 6.0 m/s O- 24 m/s O 2.0 m/s O 16 m/s O- 32 m/s O -2.0 m/s O- 4.0 m/s O-16 m/s99. Subject:- Physics If the car's speed decreases at a constant rate from 64 mi/h to 50 mi/h in 3.0 s, what is the magnitude of its acceleration, assuming that it continues to move in a straight line? Express your answer in miles per hour squared. a = VG ΑΣΦ ? mi/h²10) An object has a position given by [2.0 m+ (5.00 m/s)] + [3.0 m - 2.00 m/s2)/2, where quantities 7 are in SI units. What is the speed of the object at time -2.00 s? 10) A) 7.65 m/s B) 7.00 m/s C) 13.0 m/s D) 6.40 m/s E) 9.43 m/s
- 117. Two boats leave a marina at the same time. One travels south and the other travels north. The southbound boat travels 6 mph faster than the northbound boat. After 3 hr, the distance between the boats is 66 mi. Determine the speed of each boat.7) An object has an initial velocity v, = 4î +5ĵ m/s. After 10 seconds of motion, its velocity %3D was found to be v, =-6i +15j. The average acceleration is: %3D2) How long will it take a dropped object to reach the ground if dropped from a height of1.75 meters?