Position of a particle moving along the x-axis varies in time according to the following expression x(t) = (3.00 ) t3-10.0 m %3D What is its acceleration at t=D2.0 s? O m/s2 36.0 m/s2 O 14,0 m/s?

2. An object has the following 5 velocities( m/s) in the x-y plane. In which one of the four cases, equation of motions with constant instantaneous acceleration is valid ? Time t is in seconds, neglect acceleration due to gravity A. V,-3+4t-2, v,-6t -- 4 B. V.--3, V,--St+6 C. V-21-(4t+3)j D. V-211+3) E. Veo V,-5t-7

4. Drogon is flying vertically with a velocity of 7m/s and releases Jon Snow from a height of 20m. a. How many seconds after its release will Jon Snow reach the ground? b. At what velocity will Jon Snow reach the ground?

V₂-03 X=O Car: V₂=0 510=53² Vozo M Person: V₁₂ = 0 = a₁ = 1.552 √6= 0 = X= 43 m Find time to and position x where car сая X and person will be at the Same point.

A particle moves along the x-axis so that its coordinate follows the law x(t) =2t^2 +4, where x is in meters, and t is in seconds. Find the particles velocity (in m/s) O 23 O 7t O. 17.3 4t O none of the above

8

The position of a particle moving along the x axis is given by x -21 + 22t - 6 t m, where tis in s. What is the position of the particle at t= 1 s?. Select one: O 20 m O 17 m O there is no answer O 57 m O 37 m Activate Windows Next page Go to Settings to activate VWindo 04:44 O 4)) G ENG

Question 8 An object is moving with constant non-zero acceleration along the +x-axis. Describe the shape of the graph of the velocity in the x direction as a function of time for this object. O a horizontal straight line. O a vertical straight line. none of the given choices O a parabolic curve. a straight line making an angle with the time axis.

The motion of a bicycle rider moving in a straight line is shown in the graph below.At what time interval do the acceleration points opposite relative to the velocity vector?

An airplane in level flight travels horizontally with a constant eastward acceleration of  8.35 m/s2  and a constant northward acceleration of  −22.0 m/s2.  The airplane's initial velocity has eastward and northward components of  81.0 m/s  and  −14.0 m/s,  respectively.Determine the magnitude of the airplane's displacement from its initial position after  16.0 s. ? m