A space rover weighs less on Mars than it does on Earth. Which statement explains this difference?
A. The rover is farther from Earth.
B. The gravitational constant is smaller on Mars than on Earth.
C. The mass of Mars is less than the mass of Earth.
O D. The rover has less mass on Mars.

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Isla’s change in velocity is 30 m/s, and hazel has the same change in velocity. which best explains why they would have different accelerations? isla had negative acceleration, and hazel had positive. isla had a different time than hazel. isla had positive acceleration, and hazel had negative. isla went a farther distance than hazel.