Name
Date
Gravity and orbits — Homework
Use the distance-squared rule for gravity: new force = old force / (distance multiplier)^2.
- 1.Two masses have a force of 60 N between them. If the distance doubles, find the new force.
- 2.Two masses have a force of 200 N between them. If the distance triples, find the new force (round to the nearest whole number).
- 3.Why does the Moon stay in orbit around Earth instead of flying off in a straight line?
- 4.Why does a spacecraft far from Earth feel a much weaker pull of Earth's gravity than one close to Earth?
- 5.Explain why gravity counts as an "unbalanced force" acting on an orbiting planet, even though the planet never crashes into the Sun.
🌲 Homeschool of the FutureEighth Grade · Science · week 31 homework