Part A At an air show, a jet plane has velocity components v₂ = 725 km/h and v₁ = 455 km/h at time 4.85 s and v = 843 km/h and vy = 385 km/h at time 7.47 s. For this time interval, find the component of the plane's average acceleration. ΑΣΦ ax = 45.04 ? km/h² You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Previous Answers Request Answer Part B For this time interval, find the y component of the plane's average acceleration. ΑΣΦ ay = -26.72 Submit Previous Answers Request Answer × Incorrect; Try Again Part C ? km/h² For this time interval, find the magnitude of its average acceleration. a = ΑΣΦ Submit Request Answer Part D ? km/h² For this time interval, find the direction of its average acceleration. θα ΑΣΦ ? ° clockwise from +x axis

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A rocket blasts off and moves straight upward from the launch pad with constant acceleration. After 3.1 s the rocket is at a height of 87 m. Part A What is the magnitude of the rocket's acceleration? Express your answer using two significant figures. [5] ΑΣΦ a = 19 Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What is the direction of the rocket's acceleration? upward ? MacBook Pro m/s²

ng A woman is on a train leaving the station at 3.0 m/s, while a friend waving goodbye runs alongside the car she's in. Call the train's direction of motion the + direction. ▼ Part B Once the train has reached a speed of 10 m/s, how fast must the woman walk, and in which direction, to keep up with her friend? Express your answer with the appropriate units. VIw= Submit μÀ Value 3 @ m S O Previous Answers Request Answer Review ?

C Welcome to MyTCC X KPhysics 1 Chapter 2 Problem 2.82 0 Type here to search Content You shoot an arrow into the air. Two seconds later (2.00 s) the arrow has gone straight upward to a height of 31.0 m above its launch point. A A https://session.masteringphysics.com/myct/itemView?assignment ProblemID=180595496# d+ X I J C Mastering Physics: Physics X C L v0 = 25.3 m/s Submit Part B ✔ Correct t = Provide Feedback How long did it take for the arrow to first reach a height of 15.5 m above its launch point? Submit Previous Answers % VE ΑΣΦ ℗ 2.7: Freely Falling Objects X 2.2: Averag Request Answer W 0 C Y ? S 45°F Cle.

Please answers parts a and b

Problem 5: A vehicle accelerates down an on ramp and eventually reaches highway speed. The position of the vehicle is described by the following equation: x(t) = AP(1+B) %3D Part (a) Write an expression for the vehicle's instantaneous velocity as a function of time. Expression : v(t) = Select from the variables below to write your expression. Note that all variables may not be required. а, В, л, ө, А, В, d, g, h,j, k, m, Р, S, t Part (b) What is the initial velocity of the vehicle? Numeric : A numeric value is expected and not an expression. Vo = Part (c) What is the vehicle's velocity after accelerating for 10 seconds? The equation's parameters are as follows. A = 34 m/s B = 21 s Numeric : A numeric value is expected and not an expression. v(t) = Part (d) After accelerating, the velocity of the vehicle will begin to level off at highway speed. Write an expression for the vehicle's velocity after it has been accelerating for a long time. Expression : v(t=00) = Select from the variables…

r The speed of a boat in still water is V. A river flows with a speed of v₁. The boat travels distance of 14 miles downstream in a river in 1 hour. However, the return journey takes 2 hours. Calculate the V and V₁. Hint: Velocity = displacement/time. Displacement can be positive of neagtive depending on the direction. You will first need to set up the equations by taking into account the resultant velocity of the boat in flowing water. Consider the direction the river is flowing to be positive. Set up two equations, one for the downstream journey and one for the upstream journey, in terms of "V" and "v": Do V" and "v, add or substract downstream to give the resultant downstream velocity? Do v" and "v, add or substract upstream togive the resultant upstream velocity? Use the upstream direction as negative. The resultant upstream velocity should be negative. Equation 1 (downstream): Equation 2 (upstream): Solve for: V₁² vb Write an algebraic expression; do not use numerical values except…

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A ball moves along a 1D coordinate system with the following motion parameters at time t = 0 s: x₁ = 1.9 m and vo = 0 m/s. The ball has a constant acceleration of 1.1 m/s2 during the entire motion which occurs over a time of 1.2 s. Assume that an error in position of 4% is acceptable in this application over the entire motion. How many rows N will be needed in the table to model the entire motion to within the required error even though you are leaving out the final term of 1/2 a (At )²) present in the exact position expression?