According to Newton's first law of motion, what will an object in motion do when

external force acts

come to a stop

move at the same velocity

speed up

change direction

Which of the following pairings are more likely to be held together with the strong nuclear force? •protons with the electrons •neutrons with the electrons •neutrons with neutrons •neutrons with protons

A Federation starship (8.5 ✕ 106 kg) uses its tractor beam to pull a shuttlecraft (1.0 ✕ 104 kg) aboard from a distance of 14 km away. The tractor beam exerts a constant force of 4.0 ✕104 N on the shuttlecraft. Both spacecraft are initially at rest.

In your own words, explain what non-contact forces are.

A student hypothesizes that since elements in the same row have the same number of energy levels, they should behave the same in chemical reactions. Explain why you agree or disagree with this hypothesis.

1. Describe the vibration caused by primary waves. 2. Described the vibration caused by secondary waves.

A red apple is illuminated by green light. what color will the apple appear as?

Explain why a roller coaster's second hill cannot be taller than the first hill.

State the law of conservation of linear momentum.

Sound moves at a speed of 343 meters per second through air, a gas. Which pairing is most accurate for how sound will travel through liquid and solid?

To qualify to run in the 2005 boston marathon, a distance of 26.2 miles, an 18-year-old woman had to have completed another marathon in 3 hours and 40 minutes or less. to qualify, what must a woman's average speed have been in miles per hour?