The position of an object moving along x-axis is given by x=a+bt^(2) where a = 8.5 m, b = 2.5 m s^(-2) and t is measured in seconds. What is its velocity at t = 0 s and t = 2.0 s. What is the average velocity between t = 2.0 s and t = 4.0 s ?

The position of an object moving along x-axis is given by x=a+bt^(2) w

1.	The position of an object moving along x-axis is given by x=a+bt^(2) where a = 8.5 m, b = 2.5 m s^(-2) and t is measured in seconds. What is its velocity at t = 0 s and t = 2.0 s. What is the average velocity between t = 2.0 s and t = 4.0 s ?
Answer» Velocity at t=2 SEE is zero average velocity between t=2, t=4 sec is 15 m/s. velocity at t =4 sec is 10 m/s all the above are true Answer :B