One Newton is the force: 1. of gravity on a 1 g body. 2. of gravity on a 1 kg body. 3. that gives a 1 kg body an acceleration of 1 m/s2. 4. that gives a 1 kg body an acceleration of 9.8 m/s2. 5. that gives a 1 g body an acceleration of 1 cm/s.