Rasheed ran down the football field at a speed of 7m/s. If he got to the end in 23 seconds, how far did he actually run?

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?

If the new moon happens on january 15th, what shape will it be on february 6th?

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight