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D. positive then negative. E. negative then positive. 15. A vehicle is traveling in the +x...
B. negative. C. zero. D. positive then negative. E. negative then positive. 16. A common statistic...
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 end of the quarter-mile) of 120 mph (193 km/h). How does the average acceleration compare to g? (0.25 mile 402 m) A. 0.36 g B. 2.8 g C. 0.067 g D. 3.57g E. 0.73 g
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!!!
14. A vehicle is traveling in the +x direction to x 100 m. It then reverses...
14. A vehicle is traveling in the +x direction to x 100 m. It then reverses direction. At the instant when it changes direction, the acceleration of the vehicle is A. positive. B. negative C. zero. D. positive then negative. E. negative then positive.
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 school bus is traveling east in the positive direction of the x axis at 18...
A school bus is traveling east in the positive direction of the x axis at 18 km/h with respect to a car that is traveling in the opposite direction at a speed of 23 km/h with respect to the ground. Find the following: a. The magnitude of the bus' velocity with respect to the ground. b. The direction of the bus' velocity.
13. I The displacement of a wave traveling in the positive x-direction is D(x, t) (3.5 cm) sin(2....
13. I The displacement of a wave traveling in the positive x-direction is D(x, t) (3.5 cm) sin(2.7x 1241), where x is in m and t is in s. What are the (a) frequency, (b) wavelength, and (c) speed of this wave?
13. I The displacement of a wave traveling in the positive x-direction is D(x, t) (3.5 cm) sin(2.7x 1241), where x is in m and t is in s. What are the (a) frequency, (b) wavelength, and (c)...
An air hockey puck traveling in the positive x direction hits another puck sitting at rest...
An air hockey puck traveling in the positive x direction hits another puck sitting at rest at the origin, in an elastic collision. After the collision, the first puck has has a speed less than before, and a path at an angle below the positive x axis (in the fourth quadrant). The stone originally at rest is now moving in what direction? O straight in the positive x direction O at an angle above the positive x axis (first quadrant)...
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...
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...
A 1300 kg car moving at 5.4 m/s is initially traveling north in the positive y...
A 1300 kg car moving at 5.4 m/s is initially traveling north in the positive y direction. After completing a 90° right-hand turn to the positive x direction in 4.1 s, the inattentive operator drives into a tree, which stops the car in 280 ms. What is the magnitude of the impulse on the car (a) due to the turn and (b) due to the collision? What is the magnitude of the average force that acts on the car (c)...
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 end of the quarter-mile) of 120 mph (193 km/h). How does the average acceleration compare to g? (0.25 mile 402 m) A. 0.36 g B. 2.8 g C. 0.067 g D. 3.57g E. 0.73 g
14. A vehicle is traveling in the +x direction to x 100 m. It then reverses direction. At the instant when it changes direction, the acceleration of the vehicle is A. positive. B. negative C. zero. D. positive then negative. E. negative then positive.
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...
13. I The displacement of a wave traveling in the positive x-direction is D(x, t) (3.5 cm) sin(2.7x 1241), where x is in m and t is in s. What are the (a) frequency, (b) wavelength, and (c) speed of this wave?
13. I The displacement of a wave traveling in the positive x-direction is D(x, t) (3.5 cm) sin(2.7x 1241), where x is in m and t is in s. What are the (a) frequency, (b) wavelength, and (c)...
An air hockey puck traveling in the positive x direction hits another puck sitting at rest at the origin, in an elastic collision. After the collision, the first puck has has a speed less than before, and a path at an angle below the positive x axis (in the fourth quadrant). The stone originally at rest is now moving in what direction? O straight in the positive x direction O at an angle above the positive x axis (first quadrant)...
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...
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...
A 1300 kg car moving at 5.4 m/s is initially traveling north in the positive y direction. After completing a 90° right-hand turn to the positive x direction in 4.1 s, the inattentive operator drives into a tree, which stops the car in 280 ms. What is the magnitude of the impulse on the car (a) due to the turn and (b) due to the collision? What is the magnitude of the average force that acts on the car (c)...
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