Question

23. The position of a particle is given by x = (t - 2)2 m,
(when t is time in second). Average speed of the
particle in first 4 s is
(1) 1 m/s
(2) 3 m/s
(3) 4 m/s
(4) 2 m/s​

Answer 1

Answer:

Before turning our attention to problems involving non-constant acceleration and ... The acceleration is taken as −10 m/s2. We found that the stone's velocity is 0 m/s after three seconds, when it is at a height of 45 ... The average velocity for the first three seconds of motion is ... where x(ti) is the position of the particle at time ti.

Explanation: