An astronaut is said to be weightlessness when he\she travels in a satellite. Does it mean that the earth does not attract him\her?

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination. at the turning point, how far is the second student from the destination?

What can change the speed of sound as it travels through the ocean? a. salinity only b. density and salinity c. salinity and distance from land d. density and distance from land

If you drive 12 miles north and 35 miles east, what is the direct distance between you and your starting point?