Answer:
6.56×10⁻²⁵ m/s²
Explanation:
The force the Earth exerts on the apple is equal to the mass of the apple times its acceleration (Newton's second law).
F = ma
F = (0.4 kg) (9.8 m/s²)
F = 3.92 N
The apple exerts an equal and opposite force on the Earth.
F = ma
3.92 N = (5.98×10²⁴ kg) a
a = 6.56×10⁻²⁵ m/s²
The Earth accelerates towards the apple at 6.56×10⁻²⁵ m/s².
Round as needed.
