On the moon, an eagle feather dropped by Apollo astronauts falls with an acceleration of $1\mathrm{.}6$ m$.$s $21\mathrm{.}6$ m$.$s $2.$ Ted, the astronaut who has done this experiment, has a mass of $79$ kg $79$ kg on Earth. Using these values answer the following questions: a$)$ What is Ted's weight $($on Earth$)?\_\_\_\_\_$ newtons

b$)$ What is his weight on the moon? $\_\_\_\_\_$ newtons

c$)$ What is his mass on the moon? $\_\_\_\_\_$ kg