A biker is moving along a road at a uniform velocity of 5 m/s. A second biker is moving along the road at a uniform velocity of 8 m/s in the same direction, and overtakes the first biker. From the second biker's perspective, what is the relative velocity of the first biker? -3 m/s O- 5 m/s 11 m/s 3 m/s
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- -20. Two cyclists, Mike and Josh, simultaneously started toward each other from two towns d = 24 km apart. Josh rode at vj = 25 km/h, and Mike %3D at UM = 15 km/h. The moment they start, a fly also starts from Josh towards Mike and after reaching Mike, immediately returns towards Josh. The fly continues back and forth motion between the cyclists till the cyclists meet. Air speed of fly is UF = 30 km/h and the wind blows always towards Mike with a constant velocity u = 10 km/h. Find the total distance s flown by the fly. Sneedometer shows speed and odometer shows distance travelled, bothA 238U nucleus is moving in the x direction at 5.0×105 m/s when it decays into an alpha particle (4He) and a 234Th nucleus. If the alpha particle moves off at 22 degrees above the x axis with a speed of 1.1×107 m/s, a) What is the speed of the thorium nucleus and b) What is the direction of the motion of the thorium nucleus ( degrees clockwise from the x axis)?boy sees a deer run directly away from him. The deer is running with a speed of 20 mi/hr. The boy gives chase and runs with a speed of 8 mi/hr. What is the speed of the deer relative to the boy?
- 1. For the following motion equation s=2t^3 -15t^2+36t-22, t⩾0 a. When is the particle at rest?Question 7 of 16 A student drew the relation between the hegt Ihs and the square of the horzantal range D2 in projectle experiment by dropping the ball each time from the same hieght y. What is the velocity Vo? (The gravity acceleration gis 9.8 m/s)? 0332.4cm/s 145cm/s 0313cm/s 0980cm/s 031.3cm/s B Vo S 4 2 1 0 0 100 300 400 D'(an) 500 600The figure below is a screenshot of part of a BeyondLabz data table for an object in free fall. Match the characteristic with its correct description. Copy Data t(sec) X (m) Y (m) Vx (m/s) Vy (m/s) ax (m/s) ay (m/s') 0.000 0.0935 6.0075 0.0000 0.0000 0.0000 0.0000 0.133 0.0935 5.9747 0.0000 -0.4924 0.0000 -3.7019 0.261 0.0935 5.8814 0.0000 -0.9662 0.0000 -3.7019 0.382 0.0935 5.7374 0.0000 -1.4141 0.0000 -3.7019 0.512 0.0935 5.5222 0.0000 -1.8954 0.0000 -3.7019 0.632 0.0935 5.2681 0.0000 -2.3396 0.0000 -3.7019 0.760 0.0935 4.9384 0.0000 -2.8134 0.0000 -3.7019 0.884 0.0935 4.5610 0.0000 -3.2725 0.0000 -3.7019 1.009 0.0935 4.1230 0.0000 -3.7352 0.0000 -3.7019 First row of data (t = 0 s) [ Choose ] [ Choose] Air resistance is NOT included in the experiment This data point should be INcluded when analyzing data. Air resistance IS included in the experiment. This data point should be EXcluded when analyzing data. Acceleration (y-direction) columnn
- 46 3:14Y SITUATION 4. The rectilinear motion of a particle is governed by a where a is in m/s² and x is in meters. Given that at time t = 1sec, x = 2m and v= 2m/s. a. Write the equarion of motion b. Determine the position, velocity and acceleration at t = 4sec. ||| -16 G UThe velocity of a car A is to 5î + 11ĵ. The velocity of another car B is 11î + 5ĵ. What is the relative velocity of B with respect to A? a) 6î – 6ĵ b) 11î + 5ĵ c) 6î + 6ĵ d) 5î + 5ĵDaniel takes his two dogs, Pauli the Pointer and Newton the Newfoundland, out to a field and lets them loose to exercise. Both dogs sprint away in different directions while Daniel stands still. From Daniel's point of view, Newton runs due North at 4.65 m/s, but from Pauli's point of view, Newton appears to be moving at 2.10 m/s due East. What must Pauli's velocity relative to Daniel be for this to be true? Express your answer in terms of the x- and y-components if North is the +y-direction and East is the +x-direction. x-component: m/s Y-component: m/s Express your answer as a magnitude and an angle measured counter-clockwise from due East. magnitude & direction: at a angle counter-clockwise from due East
- Determine the magnitude of V1−V2+V3. V1=8.0i^−9.0j^ V2=i^+j^ V3=−1.0i^+4.0j^.You encounter a moving walkway that is 81 m long and has a speed of 2.1 m/s relative to the ground. How long would it take you to cover the 81 m length of the walkway if, once you get on the walkway, you immediately turn around and start walking in the opposite direction with a speed of 1.6 m/s relative to the walkway? Express your answer using one significant figure.A starship blasts past the earth at 2.0 x 108 m/s. Just after passing the earth, the starship fires a laser beam out its back. With what speed does the laser beam approach the earth?