physicsss helpp plz

Question

1. What is the Normal Force supplied by a desk to a 2 kg book?

2. What is the mass of a person that Weighs 85 N ?

3. At the surface of Venus, gravity is 8.9 m/s. A robot has a mass of 10kg on Venus.

(a) Find it’s weight on Venus.

(b) State its mass on Earth.

(c) Calculate its weight on Earth.

Answer 1

1. 2kg*(9.8 m/s^2) = 19.6 N
2. 85N/(9.8 m/s^2) = 8.67 kg
3. a. 10kg*(8.9m/s) = 89N, b. 10kg c. 10kg*(9.8m/s) = 98N