Friday

November 28, 2014

November 28, 2014

Posted by **Maggie** on Tuesday, April 9, 2013 at 5:14am.

An object is moving in a plane. At time t=0, it is at the origin, O, and moving with velocity u. After 2 seconds it is at A where OA = -2i - 4j. After a further 3 seconds it is at B where AB = 10i - 40j. Show that this is consistent with constant acceleration a, Find a and u.

I don't understand what "Show that this is consistent with constant acceleration a"means, Do I have to find the acceleration between O and A and then between A and B and work out if they are the same? I've tried this with the initial velocity of u to find the acceleration for the first step and the velocity at the end of the first step then I tried to use the velocity as the start point for the second step with a different a hoping it would come out as the same value as a in the first step. The equations were enormous and I don't think this was the right approach. However, this question being unlike any example or other exercises in the chapter, I'm at a loss to know where to start.

Any clues?

**Answer this Question**

**Related Questions**

maths - two dimensional motion - The problem I am trying to solve is from AQA ...

Advanced Maths (Vectors) AQA Level, please help? - An object is moving in a ...

mechanics - An object (point mass) is projected up an inclined plane from the ...

Mechanics for A-level - An object of mass 50kg rests on a rough plane inclined ...

physics - An object of mass 50kg is placed on inclined plane at an angle of 30 ...

Velocity and Displacement - A plane is sitting on a runway, awaiting takeoff. On...

Math - An object at rest begins moving horizontally on the x-axis, starting at ...

MATH please help - An object at rest begins moving horizontally on the x-axis, ...

Big MATH Help needed - An object at rest begins moving horizontally on the x-...

Math/ Calculus Please HELP!!! - An object at rest begins moving horizontally on ...