Tracy stands on a skateboard and tosses her backpack to her friend who is standing in front of her. which best describes the acceleration tracy experiences?
it is less than the acceleration of the backpack because she has a greater mass.
it is greater than the acceleration of the backpack because she has a greater mass.
it is less than the acceleration of the backpack because she uses a smaller force.
it is greater than the acceleration of the backpack because she uses a larger force.

I think it is the first option or a because she has a larger mass. the amount of forces on the backpack an her are the same but she moves less because of her mass.

Explanation :

It is given that, Tracy stands on a skateboard and tosses her backpack to her friend who is standing in front of her.  

We know that force depends on the mass and acceleration of an object.

i.e. F = ma ( From Newton's second law )

or acceleration is inversely proportional to mass.

Tracy's mass is more as compared to a backpack. So, the acceleration of Tracy is less as compared to a backpack.

So, the correct statement is "Acceleration of Tracy is less than the acceleration of the backpack because she has a greater mass".

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