Question

. If the student had a mass of 88.6 kg, what was his weight?

Answer 1

F = m*g = 88.6kg * 9.81 m/s^2 = 869 N (3 s.f.) 

The equation above is Newton's 2nd Law of Motion where g is the acceleration due to gravity near the Earth's surface.

Answer 2

Weight = Mass x Acceleration of Gravity

Acceleration of Gravity ≈ 9.8 m/s^2

Weight = 88.6*9.8 = 868.28 kg*m*s^-2 = 868.28 Newtons