When an object moves in a straight line with constant speed, its velocity is 3 m · S-1 at a certain time, and 9 m · S-1 after 1 s A. The displacement may be less than 5MB. The displacement may be less than 3mc. The acceleration may be less than 11m · s-2d. The acceleration may be less than 6m · S-2

When an object moves in a straight line with constant speed, its velocity is 3 m · S-1 at a certain time, and 9 m · S-1 after 1 s A. The displacement may be less than 5MB. The displacement may be less than 3mc. The acceleration may be less than 11m · s-2d. The acceleration may be less than 6m · S-2

A. If the velocity at the end of 1s is the same as the initial velocity direction, the displacement within 1s is x =. VT = V1 + v22t = 3 + 92 × 1m = 6m. If the velocity at the end of 1s is opposite to the initial velocity direction, the displacement within 1s is x =. Vt = V1 + v22t = 3 + (− 9) 2 × 1m = − 3M