Recitation 1-3 (1)

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You are watching a jet ski race. A racer speeds up from rest to 70 mph in just a few seconds, then continues at a constant speed. Part A Select the correct basic motion diagram of the jet ski, using images from the video, from 10 s before reaching top speed until 10 s afterward. ▸ View Available Hint(s) Os =70 mph Os 4=10s = 70 mph =10s x (m) 420 s (= 20s x (m) = 70 mph OS 4,= 10s =20s x (m) Submit Provide Feedback

)You were leisurely flying your F-18 when you encounter an alien aircraft. The alien was flying at an altitude of 3 km while you were at an altitude of 600 m. You begin to increase your speed at a rate of 2.0 m/s. You are traveling at a speed of 750 km/h at the instant when O = 45° and at the same instant the alien has a constant velocity of 1,500 km/h. a) Determine the velocity and acceleration vectors (in m/s and m/s², respectively) of the alien as observed by you. [Ans. to Check: vâ/a = 208.4 įm/s] b) Determine the time rate of change of the vector r that is between you and the alien ship in m/s. In other words, find ř. [Ans. to Check: † = 147.32 m/s] Hint: Do not forget about your ability to dot in different directions to eliminate variables from the equation. c) Calculate the angular velocity of the spaceship relative to you in rad/s. d) Determine the radial and angular accelerations in m/s² and rad/s². [Ans. to Check: iï = 4.86 m/s²] VB 3 km e VA 600 m 7:29 PM 2 48°F Mostly clear…

1a) Plot the position in the x-direction as a function of time for both birds on the same co-ordinatesystem (the plots do not have to be exact).b) Write down the equations of motion in x and y directions for bird 1 and 2. c)Using ?⃗ଵ(?) and ?⃗ଶ(?) to represent the position vector of birds 1 and 2, respectively, write downthe components of the position vector for both birds in parenthesis format.d) Write an equation using the tangent of the position vectors that describes when the huntershould release the arrow.e) Solve this equation for the time at which the hunter should release his arrow PLEASE explain, especially 1c, d, and e

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question 6 or 7

Aerospace engineers sometimes compute the trajectories of projectiles like rockets. Arelated problem deals with the trajectory of a thrown ball. The trajectory of a ball is definedby the (x, y) coordinates, as displayed in Figure 3. The trajectory can be modeled as y = (tan θ0)x −g2v02cos2 θ0x2 + y0 Find the appropriate initial angle θ0, if the initial velocity v0 = 20 m/s and the distance to thecatcher x is 35 m. Note that the ball leaves the thrower’s hand at an elevation of y0 = 2 mand the catcher receives it at 1 m. Express the final result in degrees. Use a value of 9.81m/s2for g and employ the graphical method to develop your initial guesses. and write code for Newton Raphson method.

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please answer this question below. many thanks, sam

: A tiny, not scary at all, bug lands on a piece of graph paper and walks along a path so that t minutes after it lands, it is at the point with coordinates x=4-t13, y=5t2+1 Compute dx/dt, and explain using dx/dt how come we know the bug never retraces its steps as t increases from t = 0 minutes to t = 2 minutes.

4) You were leisurely flying your F-18 when you encounter an alien aircraft. The alien was flying at an altitude of 3 km while you were at an altitude of 600 m. You begin to increase your speed at a rate of 2.0 m/s?. You are traveling at a speed of 750 km/h at the instant when 0 = 45° and at the same instant the alien has a constant velocity of 1,500 km/h. a) Determine the velocity and acceleration vectors (in m/s and m/s², respectively) of the alien as observed by you. [Ans. to Check: VB/A = 208.4 įm/s] b) Determine the time rate of change of the vector r that is between you and the alien ship in m/s. In other words, find r. [Ans. to Check: i = 147.32 m/s] Hint: Do not forget about your ability to dot in different directions to eliminate variables from the equation. c) Calculate the angular velocity of the spaceship relative to you in rad/s. d) Determine the radial and angular accelerations in m/s? and rad/s². [Ans. to Check: ï = 4.86 m/s²] VB 3 km VA 600 m

A particle shown in figure 2 is launched at point ‘A’ with height of 1 meter from the ground with velocity v0 = 25 m/s at an angle of 300. The particle needs to reach point ‘B’ which is 8 m from the ground. a)There are two possible flight time (t) to reach the point 'B' from point 'A'. Enter the second flight time (t2) in second (s) b)There are two possible distance (D) to reach the point 'B' from point 'A'. Enter the first possible distance (D1) in meter (m) c)There are two possible distance (D) to reach the point 'B' from point 'A'. Enter the second possible distance (D2) in meter (m)

Subject: mechanical

mecha

I need an answer of a and b, please show me how to do it in detail. THANKYOU^^ (2D-MOTION)

The subject is Dynamics and Kinematics.

I walk 450 steps at 25 degrees south east. Then 750 steps 72 degrees north of west and lastly 700 steps south of west. What will be my orientation and how many steps should I take to come back to starting point Use the following equations

Problem 2 A driver plus motorcycle weighing 230 kg total is traveling up the track described by the function y = 0.5x2. When x=5 meters the velocity is 3 m/s. The coefficient of friction between the track and the tires is 0.4. a) Find the slope of the track at the instant when x=5 m. b) Draw a correct FBD at this instant. c) Write the equations of motion for your selected coordinates. The only variable should be unknowns. d) Find the normal force acting on the motorcycle from the track. e) Find the acceleration at which the motorcycle is climbing the track

A parlicle moves in a circle of radius 20 cm. Its linear speed is given by V=2t^2-3t where t is in seconds and v is in m/s. When t=3s, b) Find the normal and tangential components of acceleration. c) Find the angular velocity. d) Find the angular acceleration.

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Need only a handwritten solution only (not a typed one).

topic:  Rectilinear Motion & Plane Curvilinear Motion

View Image. Please Write Legibly. Box the final answer.     Given: Solution:

The velocity of a boat relative to a fixed-earth coordinate system is 12 m/s and is constant. The length of the tow rope is 15 m. The angle ߠ is 30° and is increasing at the rate of 10°/s. What are the velocity and acceleration of the skier relative to the boat?

Task IV please

KINEMATICS OF PARTICLES " Motion of Particles with Constant Acceleration " I am struggling with this topic please help me solve this problem, please include solution so that I could understand this. Thankyou!

A projectile fired from the point (0,0) at an angle to the positive x-axis has a trajectory given by y= Cx- (1 + C2) In this formula, x is the horizontal distance in X. meters, y is the height in meters, v is the initial velocity in meters per second, g = 9.81 m/ sec is the acceleration due to gravity, and C>0 is a constant determined by the angle of elevation. A howitzer fires an artillery round with a velocity of 899 m/sec. Answer parts (a) and (b). (a) If the round must clear a hill 244 meters high at a distance of 2064 meters in front of the howitzer, what C values are permitted in the trajectory equation? (Type your answer in interval notation. Round the final answer to the nearest thousandth as needed. Round all intermeniate values to five decimal places as needed.) (b) If the goal in part (a) is to hit a target on the ground 79 kilometers away, is it possible to do so? If so, for what values of C? If not, what is the maximum distance the round will travel? Select the correct…

please answer number 2. KINEMATICS OF A PARTICLE: please give detailed solutions and correct answers. I will report to bartleby thos tutors who will give incorrect answers.