A15.5 kg block is pulled by two forces. the first is 11.8 n at a 53.7 angle and the second is 22.9 at a -15.8 angle. what is the magnitude and direction of the acceleration?

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Explanation:

We need to calculate the components of the resultant force on both the x (horizontal) and y (vertical) direction.

Components of the first force F1:

Components of the second force F2:

So the components of the resultant force are

So the magnitude of the resultant force is

And the direction is

The magnitude of the acceleration can be found by using Newton's second law:

while the direction is the same as the resultant force, .

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.