An object is dropped from a tower, 400400 ft above the ground. the object's height above ground x seconds after the fall is s(x)equals=400400minus−16xsquared2. about how long does it take the object to hit the ground? what is the object's velocity at the moment of impact?

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

The charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.

In what direction does an applied force move an object