An object accelerates uniformly from 3.0 meters per second east to 8.0 meters per second east in 2.0 seconds. What is the magnitude of the acceleration of the object ?

2.5

Explanation:

As we can see in the question that initial and final directions of the velocity of the object are same i.e. east, so it is clear that object is in a straight line motion.

Given that,

Initial velocity of the object = 3 m/s

Final velocity of the object = 8 m/s

Time interval = 2 seconds

The following equation of motion in straight line can be used -

And thus acceleration can be calculated as

where, is final velocity and is initial velocity.

So,

1 a

2 b

3 b

4 d

5 d

6 d

explanation:

unlike poles attract