Along jumper goes into a jump at an angle of 20.0° above the horizontal and at a speed of 9.9 m/s. what is his time of flight (the time the jumper is in the air), in units of seconds?

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

What is the relationship between ozone and smog?

2) why do satelites not fall while revolving around the earth?