just need to find the time. We find the time‚ by applying the average velocity formula to both parts of the journey‚ and solving for time. Δt1 = Δx1/ Vavg ‚ 1 = 30/60 = 0.5 hours Δt2 = Δx2/ Vavg ‚ 2 = 30/30 = 1.0 hours Vavg = Δx/Δt = (30 + 30) / (0.5 + 1.0) Vavg = 40 mi/hr Questions 2 – 4 relate to two particles that start at x = 0 at t = 0 and move in one dimension independently of one another. Graphs‚ of the velocity of each particle versus time are shown below Particle A Particle B
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Write ib unit. velocity’ bi I)t"* velocity-time graPh‚ when an obiect has (i) unifortdy accelerated (ii) uniformly retarded velocity. fror" that if u Uoayi" thrown ve*ically upwatd‚ the time of ascent is equal to the time ffi of descent. Th;;r*h .ttracts the moon. Does the moon also attract the earth ? If it does‚ why does ttre earth not move towards the moon ? 6) A bullet of mass 1‚0 g is fired with a velocity of 400 m/s from a gun of mass 4 kg’ What is ‚‚xldge recoil velocity of the gun
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line along a road. It’s distance x from a stop sign is given as a function of time t by the equation‚ where and. Calculate the velocity of the car for each of the time given: (a) t = 2.00s; (b) t = 4.00s; (c) What will be the time when the acceleration is equal to zero? Solution: By getting the derivative of the distance as a function of time we can get the velocity as a function of time. Substitute the values of α and β a) Given t = 2.00s b)
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Equations of Motion Worksheet 1. A car moving at a velocity of 25 m/s‚ accelerates at a rate of 6 m/s2. Find its velocity after 3s. 2. An object is dropped from rest. Calculate its velocity after 2.5s if it is dropped: a. On Earth‚ where the acceleration due to gravity is 9.8m/s2. b. On Mars‚ where the acceleration due to gravity is 3.8m/s2. 3. A motorbike is travelling with a velocity of 3m/s. It accelerates at a rate of 9.3m/s for 1.8s. Calculate the distance it travels in this time. 4. A Tesla
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r a c t The three-dimensional flow field and the flow pathlines within a Tesla disc turbine have been investigated analytically and computationally. The description of the flow field includes the three-dimensional variation of the radial velocity‚ tangential velocity and pressure of the fluid in the flow passages within the rotating discs. A detailed comparison between the results obtained from the analytical theory and computational fluid dynamic (CFD) solutions of Navier–Stokes equations is presented
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a rotating turntable. The different vectors representing velocity for the travelling marble are shown below. Notice that the size of the vector remains the same but the direction is constantly changing. Because the direction is changing‚ there is a ∆v and ∆v = vf - vi ‚ and since velocity is changing‚ circular motion must also be accelerated motion. vi ∆v vf -vi vf2 If the ∆t in-between initial velocity and final velocity is small‚ the direction of ∆v is nearly radial (i.e. directed
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acceleration of -1.5m/s2. What is the final velocity of the car? How far does the car travel in this time interval? vf = vi + a(Dt) or vf = (0 m/s) + (-1.5 m/s2)(5.0 s) = -7.5 m/s Dx = vi(Dt) + 1/2a(Dt)2= Dx = (0)(5.0 s) + 1/2(-1.5 m/s2)(5.0 s)2 = -18.75 m or -19 m (sig figs). 2E 1. Find the velocity after the stroller has traveled 6.32 m. (A person pushing a stroller starts from rest‚ uniformly accelerating at a rate of 0.500m/s2. What is the velocity of the stroller after it has traveled 4.75m
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Name _ ___________________ Motion in 2D Simulation Go to http://phet.colorado.edu/simulations/sims.php?sim=Motion_in_2D and click on Run Now. 1) Once the simulation opens‚ click on ‘Show Both’ for Velocity and Acceleration at the top of the page. Now click and drag the red ball around the screen. Make 3 observations about the blue and green arrows (also called vectors) as you drag the ball around. 1. The green vector moves in the direction of the mouse until the red ball catches up to
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and observed. This kind of mechanism is very commonplace in machines. Machines are made up of a number of parts and relative motion between the various parts permits the working of the machine. As the crank is rotated the rod starts moving but the velocity is not uniform. It is greater towards one direction than the other. This principle is utilized extensively in some machines. Aim Understand the relative motion of the rotational and sliding joint. Understand the movement of the rotational and
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Sample Laboratory Report On the pages that follow a sample laboratory report is shown. The large numbers shown on the report correspond to numbers in parentheses in the discussion that follows. This sample report is to be used only as a general guide. Your laboratory instructor may have additional specific instructions and requirements for your laboratory reports. Each report should be clearly identified with (1) a title‚ (2) your name and the name(s) of your partners‚ (3) the date the experiment
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