None The acceleration of a particle is given bya(t)=-2.10 m/s² + (2.98 m/s³)t.Part AFind the initial velocity vExpress your answer insuch that the particle will have the same x-coordinate at time t = 4.02 s as it had at t = 0.meters per second.ΑΣΦSubmitRequest AnswerPart BWhat will be the velocity at time t = 4.02 s?Express your answer in meters per second.VzΑΣΦSubmitRequest Answer< Return to AssignmentProvide Feedback?m/s?m/s

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University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter4: Motion In Two And Three Dimensions

Section: Chapter Questions

Problem 19P

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1つ7 3. An object undergoes motion in 2 dimensions under a constant acceleration of "-2.50 m/s at an angle of 50.0° with respect to the + x direction. It also has an initial velocity of vi = 7.00 m/s at an angle of 10,0° The object begins at the coordinates (0, 0). a) What are the coordinates of the object at t = 7.00 s? Want Cx, y) at t =?4 4tzテメ0チ=XT vse this Con Vxi = \V;l cos v +ハ Ay=lalsin Ga b) What is its total velocity vector of the object as a magnitude and direction at t = 7.00 s? a) Ov= Ton
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A mouse wants to jump onto a table that is [y] cm high in order to escape from my cat Jackie. Standing [x] cm from the table it jumps, leaving the ground at an angle of [th] degrees, landing on the edge of the table. What is the initial speed of the mouse in meters per second?
Ih took Joseph 30 minutes longer to drive 375 km from along the north shore of a river from Apex to Rounder than it took to return along the south shore, a distance of 420 km. On the retum trip the highway was wider and in better condiftion, so he was able to average 10 km/h faster. What was his average speed on cach part of the trip?
A boat is able to move through still water at 20m/s. It makes a trip to a town 3.0 km upstream. If the river flows at 5m/s, the time required for this trip is: O120s 150s 200s 300s 320s REDMI NOTE 9 te of an object is given as a function of time by x = 2t- 3t2, where x is in AI QUAD CAMERA Mes and tis in seconds. Its average velocity óver the interval from t = 0 tot = 4 s
A projectile launches at an initial velocity of 55 m/s. Determine the length of time it will take the projectile to land. g = 9.81 m/s^2 Vo 30° M N Ad, = (v,)t Ad, - = (v, )t V2y = Vi, - gt (v,) = (v, ) - 2g(Ad,) v = v, cos e (constant) Viy = v, sin e 1 = initial 2 = final
Please answer the following, thank you!
The acceleration of a particle is given by a 3t-37, where a is in meters per second squared and tis in seconds. Determine the velocity and displacement as functions of time. The initial displacement at t=0 is so-8 m. and the initial velocity is vo-2 m/s. After you have the general expressions, evaluate these expressions at the indicated times. Answers: Att 5.5 s. 5 Att-10.5s, 5= m. v L m, m/s m/s
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of vo 19.5 m/s. The cliff is h = 37.0 m above a flat, horizontal beach as shown in the figure. (a) What are the coordinates of the initial position of the stone? Xo Yo m m (b) What are the components of the initial velocity? Vox Voy m/s m/s (c) Write the equations for the x- and y-components of the velocity of the stone with time. (Use the following as necessary: t. Let the variable t be measured in seconds. Do not include units in your answer.) ya (d) Write the equations for the position of the stone with time, using the coordinates in the figure. (Use the following as necessary: t. Let the variable t be measured in seconds. Do not state units in your answer.) (e) How long after being released does the stone strike the beach below the cliff? (f) with what speed and angle of impact does the stone land? m/s below the horizontal
A man falls from rest from the top of a building of height H = 100 m. A time 1 = Is later, Superwoman swoops after him with initial speed up downwards, subsequently falling frecly. She catches the man at a hcight h = 20 m above the ground. What was y?

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