Answer: 60
Explanation: if u hit it it will have impact and the impact added 10n
The acceleration of the object is 
Explanation:
We can solve the problem by using Newton's second law, which states that the net force exerted on an object is equal to the product between the mass of the object and its acceleration:

where
F is the net force
m is the mass of the object
a is its acceleration
For the object in this problem,
F = 500 N is the applied force
m = 75 kg is the force
Solving the equation for a, we find the acceleration:

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Distance = (30+40+50) = 120 km
It's back where it started, so displacement = zero
By raising a position of an object, Its potential energy increases.