On a horizontal road, a car is traveling West at a constant speed of 4.20 m/sm/s . After 30 ss , it has rounded a corner and is now heading North at a constant speed of 12.6 m/sm/s .    What is the magnitude of the car's average acceleration during this 30 s time interval? 0.56 m/s2 0.28 m/s2 0 m/s2 0.44 m/s2

From the top of a cliff, a person throws a stone straight downward. The initial speed of the stone just after leaving the person's hand is 9.7 m/s. (a) What is the acceleration (magnitude and direction) of the stone while it moves downward, after leaving the person's hand? magnitude     m/s2

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A particle travels along the +x axis. At t = 0 s, its velocity is 10.0 m/s and its acceleration is -2.0 m/s^2.  Question A: Which of the following statements is true?           1. The particle will slow down and eventually come to a complete stop           2. The particle cannot have a negative acceleration and be moving in the positive x direction           3. The particle will continue to move in the positive x direction, slowing but never coming to a complete stop.           4. The particle will slow down, stop momentarily, then speed up in the x- direction.  Question B: At what time will the particle be stopped?           1. t = 5.0 s          2. t = -5.0 s          3. t = -0.2 s          4. The particle does not ever stop  Question C: What is the particle's displacement from its initial position at t = 10.0 s ?  Please Answer questions A, B, and C

A train, traveling at a constant speed of 22.0 m/s, comes to an incline with a constant slope. While going up the incline, the train slows down with a constant acceleration of magnitude 1.40 m/s2.  The speed of the train after 6.40 s on the incline is 13.0 m/s How far has the train traveled up the incline after 6.40 s?

@ 2 9. An object initially at rest experiences an acceleration of 1.90 m/s² for 6.50 s then travels at that constant velocity for another 9.90 s. What is the magnitude of the object's average velocity over the 16.4 s interval? m/s F2 10. A person is driving along a straight highway at a speed of 22.0 m/s when the traffic light which is 43.0 m ahead turns yellow. Because of his "reaction time", there is a delay of 0.15 s before the man steps on the brake. The car then slows with a deceleration of 4.20 m/s2. By how much distance does the driver miss the traffic light line? # 3 80 F3 $ 200 F4 m % 5 F5 ^ 6 Submit Assignment MacBook Air & 7 ◄◄ F7 CO * 8 DII FB ( F9 ) 0 A F10 F11 +11 = 4) 品 F12 } delete

A juggler throws a bowling pin straight up with an initial speed of 8.2 m/s. How much time elapses until the bowling pin returns to the juggler's hand? 0.84 s 1.68 s O 1.2 s O 2.4 s

A red Mazda Miata (type of car) accelerates from rest at a rate of a₁ in the positive x direction for a total of 20.0 seconds. The Mazda then holds their speed and direction constant for a 20.0 additional seconds. Finally, while continuing in the positive x direction, the Mazda slows down at a rate of a2 until the car stops moving. We want to determine the total distance traveled by the Mazda and the average speed of the car if we know a₁ and ₂. (A) Sketch a graph of velocity versus time for this short trip. Label the time axis to indicate which portions of the curve(s) correspond to the above intervals. Identify and write knowns and unknowns (B) Without using numerical values, determine which physics equations of motion will help solve this problem. Simplify as useful for this particular case. (C) If a₁ = 2.0 m/s² and a₂ = -3.0 m/s² determine the total distance traveled during all intervals and the average velocity of the Mazda.

What are these graphs acceleration direction (-x,-y,+x,+y-axis)? and displacement?

A westward moving bicycle increases its speed from 2.0 m/s to 12.0 m/s in 4.0 seconds. What is the magnitude (value) and direction of the acceleration? Magnitude: Direction: