Chen is testing the friction of three surfaces. He pushes the same ball across three different surfaces with the same force and measures the distance the ball rolls over each surfacel. The ball moved ten inches across Surface 1, six inches across Surface 2, and fifteen inches across Surface 3. Which could most likely describe the three surfaces? Surface 1 is ice, Surface 2 is gravel, and Surface 3 is blacktop.

Surface 1 is gravel, Surface 2 is ice, and Surface 3 is blacktop.

Surface 1 is blacktop, Surface 2 is gravel, and Surface 3 is ice.

Surface 1 is blacktop, Surface 2 is ice, and Surface 3 is gravel.

After the near spacecraft passed mathilde, on several occasions rocket propellant was expelled to adjust the spacecraft's momentum in order to follow a path that would approach the asteroid eros, the final destination for the mission. after getting close to eros, further small adjustments made the momentum just right to give a circular orbit of radius 45 km (45 × 10^3 m) around the asteroid. so much propellant had been used that the final mass of the spacecraft while in circular orbit around eros was only 545 kg. the spacecraft took 1.04 days to make one complete circular orbit around eros. calculate what the mass of eros must be.

What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?