In a 100 m dash event, the sprinter siva clears 18m-in 2 seconds, uniformly in creasing speed.Obtain the formula for displacement after a time 't' second.

In a 100 m dash event, the sprinter siva clears 18m-in 2 seconds, uniformly in creasing speed.State whether the motion is dimensional or two dimensional.

Two bodies start moving in the same straight line at the same instant of time from the same origin.The first body moves with a constant velocity of 40 m/s and the second starts from rest with a constant acceleration of 4m/s^2 . a)What is uniform speed? b)Find the time that elapses before the second catches the first body.

Oscillations of a loaded spring are simple harmonic motion. A body oscillates with S.H.M is given by x=5 cos[2pit+pi/4] . Calculate the displacement at time, t=1.5s .

A sprinter starts from rest and pickup a speed of 12m/s in 3seconds . a)Name the type of motion. b)Derive a relation to find distance travelled during t second for this type of motion. c)A car manufacturer advertises that the brakes are so perfect that the car stops instantly.Do you agree?Explain.