A boy accidentally dropped a marble from his apartment window. If the mass of the marble is 10 g and the height from which it was dropped was 65 m, what was the speed of the marble when it hit the ground? Assume that the air resistance can be neglected and g = 10 m/s2

An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?

State the right hand rule of the direction of magnetic field in a conductor carrying current

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.