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14. A vehicle is traveling in the +x direction to x 100 m. It then reverses...
A vehicle is traveling in the +x direction to x = 100 m. It then reverses...
A vehicle is traveling in the +x direction to x = 100 m. It then reverses direction. At the instant when it changes direction, the velocity of the vehicle is A. positive. B. negative. C. zero. D. positive then negative .E. negative then positive. EXPLAIN PLEASE!!!
D. positive then negative. E. negative then positive. 15. A vehicle is traveling in the +x...
D. positive then negative. E. negative then positive. 15. A vehicle is traveling in the +x direction to x = 100 m. It then reverses direction. At the instant when it changes direction, the velocity of the vehicle is A. positive. B. negative. C. zero. D. positive then negative. E. negative then positive 16. A common statistic in car tests is the standing (starting from rest) quarter-mile performance. A modern sports car can achieve a terminal speed (speed at the
4) (5 pts) Suppose that a car traveling to the west (or negative x-direction) begins to...
4) (5 pts) Suppose that a car traveling to the west (or negative x-direction) begins to slow down as it approaches a traffic light. Which of the following statements about its acceleration is correct? a. The acceleration is toward the east b. The acceleration is zero C. Since the car is slowing down, the acceleration is negative d. The acceleration is toward the west. 5) (10 pts) Sketch a graph of position, velocity, and acceleration vs. time for the car...
3. A train boxcar traveling in the positive x-direction with a velocity, u 10.00 m/s R,...
3. A train boxcar traveling in the positive x-direction with a velocity, u 10.00 m/s R, passes directly in front of an observer on a stationary platform. At the precise moment the boxcar passes the observer, a particle is launched from the bottom, left corner of the boxcar with an initial speed, vo' 8.00 m/s at an angle of 0 30.0° above the horitonatal according to an observer on the boxcar (shown below left). Immediately following the launch, the boxcar...
An EM wave passes point P, traveling in the -x direction. At one instant of time,...
An EM wave passes point P, traveling in the -x direction. At one instant of time, the magnetic field at point P points in the -z direction. At this same moment, the electric field at point P: a) points in the +y direction b) points in the -y direction c) must be zero at all times d) more information is needed to determine e) none of the above are correct An EM wave passes point P, traveling in the -x...
An object moving in the *x direction experience an acceleration of *2.0 m/s^2- This mean the...
An object moving in the *x direction experience an acceleration of *2.0 m/s^2- This mean the object is increasing its velocity by 2.0 m/s every second. travels 2.0 m In every second. is traveling at 2.0 m/s. is decreasing its velocity by 2.0 m/s every second. Suppose that an object is moving with a constant velocity. Which statement concerning Its acceleration must be correct? The acceleration is constantly increasing. The acceleration is a constant non-zero value. The acceleration is constantly...
An object is initially traveling in the +x direction at 15 m/s. A constant acceleration of...
An object is initially traveling in the +x direction at 15 m/s. A constant acceleration of 6.7 m/s2 is applied in the -x direction. What is the displacement it travels, in meters, before it stops? If in the negative x direction, indicate so with a negative sign.
point. Make sure you have 1. A train travels due south at 60 m/s. It reverses...
point. Make sure you have 1. A train travels due south at 60 m/s. It reverses its What is the change in velocity of the train? (ab) 100 (bd) 60 m/s-due north (ce) 40 m/s-due south marked your Scantron with a pencil, NO inkt direction & travels due north at 40s (be) zero m/s 2. What are the dimensions of acceleration? Use L. for length & T for time. (ab) ILJ IT(ee) ILP IT (be) ILP 3. Which one of...
A body of mass, 0.5kg traveling in the positive direction of the x-axis with a speed...
A body of mass, 0.5kg traveling in the positive direction of the x-axis with a speed of 10 m/s collides with another body of massz 0.75kg and traveling with a speed of 15 m/s in the negative direction of the x-axis. If after the collision the body of mass, moves with speed of 5 m/s in the negative direction of the x axis. Determine: a The velocity (magnitude and direction of the body mjafter the collision b. Indicate the type...
A car is traveling to the left, which is the negative direction. The direction of travel...
A car is traveling to the left, which is the negative direction. The direction of travel remains the same throughout this problem. The car's initial speed is 24.1 m/s, and during a 8.47 -second interval, it changes to a final speed of (a) 27.1 m/s and (b) 11.2 m/s. In each case, find the acceleration (magnitude and algebraic sign).
D. positive then negative. E. negative then positive. 15. A vehicle is traveling in the +x direction to x = 100 m. It then reverses direction. At the instant when it changes direction, the velocity of the vehicle is A. positive. B. negative. C. zero. D. positive then negative. E. negative then positive 16. A common statistic in car tests is the standing (starting from rest) quarter-mile performance. A modern sports car can achieve a terminal speed (speed at the
4) (5 pts) Suppose that a car traveling to the west (or negative x-direction) begins to slow down as it approaches a traffic light. Which of the following statements about its acceleration is correct? a. The acceleration is toward the east b. The acceleration is zero C. Since the car is slowing down, the acceleration is negative d. The acceleration is toward the west. 5) (10 pts) Sketch a graph of position, velocity, and acceleration vs. time for the car...
3. A train boxcar traveling in the positive x-direction with a velocity, u 10.00 m/s R, passes directly in front of an observer on a stationary platform. At the precise moment the boxcar passes the observer, a particle is launched from the bottom, left corner of the boxcar with an initial speed, vo' 8.00 m/s at an angle of 0 30.0° above the horitonatal according to an observer on the boxcar (shown below left). Immediately following the launch, the boxcar...
An EM wave passes point P, traveling in the -x direction. At one instant of time, the magnetic field at point P points in the -z direction. At this same moment, the electric field at point P: a) points in the +y direction b) points in the -y direction c) must be zero at all times d) more information is needed to determine e) none of the above are correct An EM wave passes point P, traveling in the -x...
An object moving in the *x direction experience an acceleration of *2.0 m/s^2- This mean the object is increasing its velocity by 2.0 m/s every second. travels 2.0 m In every second. is traveling at 2.0 m/s. is decreasing its velocity by 2.0 m/s every second. Suppose that an object is moving with a constant velocity. Which statement concerning Its acceleration must be correct? The acceleration is constantly increasing. The acceleration is a constant non-zero value. The acceleration is constantly...
point. Make sure you have 1. A train travels due south at 60 m/s. It reverses its What is the change in velocity of the train? (ab) 100 (bd) 60 m/s-due north (ce) 40 m/s-due south marked your Scantron with a pencil, NO inkt direction & travels due north at 40s (be) zero m/s 2. What are the dimensions of acceleration? Use L. for length & T for time. (ab) ILJ IT(ee) ILP IT (be) ILP 3. Which one of...
A body of mass, 0.5kg traveling in the positive direction of the x-axis with a speed of 10 m/s collides with another body of massz 0.75kg and traveling with a speed of 15 m/s in the negative direction of the x-axis. If after the collision the body of mass, moves with speed of 5 m/s in the negative direction of the x axis. Determine: a The velocity (magnitude and direction of the body mjafter the collision b. Indicate the type...
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