A particle travels along a straight line with a velocity of v = (4t - 3t²) m/s, where t is in seconds. Part A Determine the position of the particle when t = 3.6 s. s=0 when t = 0. Express your answer to three significant figures and include the appropriate units. 8= μA Value Submit Request Answer Units ?
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- Part A If the car's speed decreases at a constant rate from 76 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. 1961 ΑΣΦ mi/h² You have expressed your answer in miles per hour per second. Note that you need to express your answer in miles per hour squared. You may need to review Conversion Between Seconds and Hours No credit lost. Try again. Submit Part B Previous Answers Request Answer Submit ? What distance does the car travel during the braking period? Express your answer in feet. VAX+ Best Answer ftFor each graph of vx vs. t in the left column, choose the letter (a-i) corresponding to the appropriate description of motion. Not all descriptions will be used. Assume the usual coordinate system (+x to the right, +y up, +z out of the page). a. A cart moves to the right, gradually slowing down. qv Ux by hv Uxi X Ux Ux Ux dv Ux Additional Materials eBook b. A cart moves to the right, gradually slowing down, stops, and moves to the left, speeding up. c. A cart moves to the left at constant speed. d. A cart moves to the right, gradually speeding up. e. A cart remains stationary and does not move. f. A cart moves to the right at constant speed. g. A cart moves to the left, gradually slowing down. h. A cart moves to the left, gradually slowing down, stops, and moves to the right, speeding up. i. A cart moves to the left, gradually speeding up.A skateboarder travels on a horizontal surface with an initial velocity of 3.6 m/s toward the south and a constant acceleration of 2.5 m/s? toward the east. Let the z direction be eastward and the y direction be northward, and let the skateboarder be at the origin at t =0.
- A motorcycle begins at rest at t0 = 0 seconds. The motorcycle starts moving, and eventually covers a distance d = 840 m, in a time tf = 189 s. In a coordinate system with north being the positive x-direction, the motorcycle's motion is in the northern direction (see figure). 1. What was the motorcycle's average velocity in in the northern direction vavg,N, in this period in meters per second? 2. If the motorcycle's final velocity at tf was 12 m/s, what was the motorcycle's average acceleration in the northern direction, aavg,N, during this period in m/s2?B. Critical Thinking. Answer the following items.A truck is moving at +35.0 m /s when the driver sees a red light. In 2.60 seconds, the truck comes to a stop. A. Find the truck's acceleration (magnitude and direction). B. Find the truck's displacement(magnitude and direction).
- A cat walks in a straight line, which we shall call the -axis, with the positive direction to the right. As an observant physicist, you make measurements of this cat's motion and construct a graph of the feline's velocity as a function of time (Figure 1). I. Calculate the area under the graph between t = 0 and t = 6.0 s. (Express your answer to two significant figures and include the appropriate units.) II. For the time interval t = 0 to t = 6.0 s, what is the magnitude of the average velocity of the cat? (Express your answer to two significant figures and include the appropriate units.) III. Use constant-acceleration equations to calculate the distance the cat travels in this time interval. (Express your answer to two significant figures and include the appropriate units.)A small object moves along the x-axis with acceleration a₂ (t) = -(0.0320 m/s³) (15.0 s-t). At t=0 the object is at x = -14.0 m and has velocity Voz = 8.20 m/s. Part A What is the x-coordinate of the object when t = 10.0 s? Express your answer with the appropriate units. x= μА Value 4 m ? X Incorrect; Try Again; 2 attempts remainingNeeds Complete solution with 100 % accuracy.
- Problem-Solving Technique: Draw a labeled picture. Put a coordinate system on the picture indicating the location of the origin and the positive direction. Show the solution in a step-by-step orderly fashion. Write any equation you use in symbolic form before substituting in numbers. 1. Ann is traveling at 30 m/s (80 mi/hr) west when she passes a police car. She immediately begins slowing down at a rate of 2.5 m/s for 4 seconds. How far has she traveled for this time? a. Fill in the information that is given in the problem. Put a question mark for any quantity that is not given in the problem. Vox = v. = b. Determine the distance she traveled in this time. Start with the equation in sy numbers you used including units. olic form and show theConsider the following descriptions of the vertical motion of an object subject only to the acceleration due to gravity. Begin with the acceleration equation a(t) = v'(t) = g, where g= - 9.8 m/s. a. Find the velocity of the object for all relevant times. b. Find the position of the object for all relevant times. c. Find the time when the object reaches its highest point. What is the height? d. Find the time when the object strikes the ground. A softball is popped up vertically (from the ground) with a velocity of 25 m/s. а. v(t) b. s(t) = %3D c. The object's highest point is m at time t= S. (Simplify your answers. Round to two decimal places as needed.) d. t= (Simplify your answer. Round to two decimal places as needed.)The position of a particle along a straight line is given by s(³ 98² +158) ft, where t is in seconds. Part A Determine maximum acceleration during the time interval 0SEE MORE QUESTIONS