College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- Suppose the position vector for a particle is given as a function of time by r(t) = x(t)î + y(t)ĵ, with x(t) = at + b and y(t) = ct2 + d, where a = 1.40 m/s, b = 1.50 m, c = 0.117 m/s2, and d = 1.12 m. %3D (a) Calculate the average velocity during the time interval from t = 2.15 s to t = 4.10 s. v = m/s (b) Determine the velocity at t = 2.15 s. v = m/s Determine the speed at t = 2.15 s. m/sarrow_forwardA toy frog is initially at the origin of a Cartesian coordinate system. Upon leaping, its position after a second is given by P = (5.0 cm)i + (70 cm)) + (3.0 cm) k What is the distance (in centimeter) traveled by the toy frog assuming straight-line motion?arrow_forwardDetermine the particle’s position and velocity at t = 1.00 s.arrow_forward
- A car is 3.0 km west of a traffic light at t = 0 and 7.0 km east of the light at t = 8.0 min. Assume the origin of the coordinate system is the light and the positive x direction is eastward. (a) what are the car’s position vectors at these two times? (b) what is the car’s displacement between 0 min and 6.0 min?arrow_forwardA ball is shot from the ground into the air. At a height of 9.4 m, its velocity is = 7.71+ 6.27 m/s, with i horizontal and upward. (a) To what maximum height does the ball rise? (b) What total horizontal distance does the ball travel? What are the (c) magnitude and (d) angle (below the horizontal; give as negative) of the ball's velocity just before it hits the ground?arrow_forwardGiven the displacement vector ? =[3.1?2, 2.0?, 0]:(a) what is the position of the object at time? = 2.1 ? assuming the object started at theorigin?(b) what is the distance the object has traveled at? = 2.1 ??(c) what is the velocity of the object as a functionof time?(d) what is the velocity of the object at ? = 0, ? =2.1 ? and ? = 4.2 ??(e) what is the speed of the object at the timesgiven in part (d). Are the speed evenly spaced?Would you expect this? Why or why not?(f) what is the acceleration of the object at? = 0, ? = 2.1 ? and ? = 4.2 ??arrow_forward
- Ammar flies a drone starting from time = 0 second and position (0, 4m) with an acceleration of ?⃑ = 2?̂??2 −4?̂??2and an initial velocity of ?⃑? = 6.00 ?̂??. Find(a) the vector position of the particle at any time t,(b) the velocity of the particle at any time t,(c) the coordinates of the particle at t = 3.00 sarrow_forwardApplication 3: A particle moves on a horizontal trajectory with velocity V = (3t? - 6t) m/s. Here t is the time in seconds. If it is initially in the center O, find the path, average velocity vector, and average velocity of the particle at the time interval t = 0-t = 3.5 s. ST = 14.1 m. Vavg = 1.75 m/s - (vp)=4.04 m/sarrow_forwardAt t = 0, a stone is thrown at an angle of 35.0 ◦ above the horizontal with an initial speed equal to 25.0 ms−1. Calculate the magnitudes of the horizontal and vertical components of its displacement at t = 1.20 s.arrow_forward
- A plane flies 493 km east from city A to city B in 45.0 min and then 983 km south from city B to city C in 1.30 h. For the total trip, what are the (a) magnitude and (b) direction of the plane's displacement, the (c) magnitude and (d) direction of its average velocity, and (e) its average speed? Give your angles as positive or negative values of magnitude less than 180 degrees, measured from the +x direction (east). (a) Number i Units (b) Number Units (c) Number i Units (d) Number i Units (e) Number Units IIarrow_forwardCurrent Attempt in Progress L locates the paticle, which then has the velocity 4ti + 5t), where a is in meters per second- The acceleration of a particle moving only on a horizontal xy plane is given by a squared and t is in seconds. At t=0, the position vector 7= (20.0m)i + (39.0m) vector 7 = (5.10m/s)i + (2.70m/s). At t-3.70s, what are (a) its position vector in unit-vector notation and (b) the angle between its direction of travel and the positive direction of the x axis? (a) Number i (b) Number eTextbook and Media Save for Later Units Units Attempts: 0 of 8 used Submit Answerarrow_forwardPlease asaparrow_forward
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