an object is dropped from a building and reaches a velocity of 80 m/s just before it hits the ground. how high is the building

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Determine the maximum r-value of the polar equation r =3+3 cos 0

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?