please I need help asap ID A certain object moves horizontally in a straight Velodty line....
I have three questions I need assistance on please: 1. To make an object start moving on a surface with friction requires (a) less force than it takes to keep it moving on the surface at constant velocity (b) the same force as to keep it moving on the surface at constant velocity (c) more force than it takes to keep it moving on the surface at constant velocity (d) a force equal to the weight of the object (2)...
The figure shows the velocity of an object moving along a straight line as a function of time. Determine: a) The displacement of the object for the first 9 secondsb) The object's average velocity from t = 0 s tot=9 s.c) The object's average acceleration from t = 0 tot = 5 seconds.c) The acceleration of the object at t =8 seconds.
Average and Instantaneous Velocity A particle moves along the x axis. Its position varies with time acording to the expression x =-4t + 2t2, where x is in meters and t is in seconds. The position-time graph for this motion is shown in the figure. Notice that the particle moves in the negative x direction for the first second of motion, is momentarily at rest at the moment t = 1 s, and moves in the positive x direction at times...
12. A drag racing car starts from rest at 0 and moves along a straight line with velocity given by v br, where b is a constant. The expression for the distance traveled by this car from its position at t0 is: 13. This graph shows the velocity of a particle as a function of time. During what interval is its displacement negative? v(ms) A)0-2s B) 2s-5s C)5s-9s D) 0-9s E) Its displacement is not negative 12F- t(s) between 0...
(10 pts) Suppose an object moves along a line with velocity v(t) = 3+- 18t +24, for 0 st < 5, where t is measured in seconds and velocity have unit of ft/s. (a) Determine when the motion is in the positive direction and when it is in the negative direction. (b) Find the displacement of the object on the interval 0 st 35. (c) Write down an expression for the distance traveled by the object over the interval 0...
An object moves with respect to its reference (origin) following the following coordinates: x= 4.0m - (0.45m/s^2)t^2 y= (1.50m/s)t + (0.45m/s^3)t^3 a) Obtain the coordinates of the object, the displacement vector and the distance from the origin at t = 0.0 s and at t = 2.0 s. b) Obtain the average vehicle speed between t = 0.0 s and t = 2.0 s. c) If the instantaneous velocity at x of the object varies with time as follows: and...
An object moves along a line where s(t) = t^3 − 12t^2 + 36t − 30 (where s(t) is in feet and t in seconds). 1) When is the velocity 0? 2) When is the velocity positive? 3) When is the object moving to the left? 4) When is the acceleration positive? 5) Sketch a picture of its motion. Please label the numbers of the answers.
2. A mass moves along a straight line, which we will call the x-axis with the positive direction to the right. The equation for the turtle's position as a function of time is x(t) = 40.00cm + 16.00 en/s t-10.00cm/s2 t2 A. Find the object's initial velocity, initial position, and initial acceleration. B. At what time t is the velocity of the object zero? C. How long after starting does it take the object to return to its starting point?...
Question 3 (1d motion, non-constant a) An object is recorded to move under the influence of the following acceleration. a(r)-(-카 s" The object was initially released from rest at the position x 20 m. Use this for the state of the object at time t 0 s. a. What is the velocity of the object at time t- 5 s? b. What is the position of the object at t 5 s? c. What is the displacement of the object...