What is the mass of an object moving with 80N of force and an acceleration of 8 m/s2?

10 Kg

Explanation:

Force is equal to mass times acceleration

therefore mass is equal to force divided by acceleration

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at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be