15 POINTS The tallest freestanding structure in the world used to be the CN Tower in Toronto. The tallest mount in the world is Mount Everest, with a height of approximately 8 848 m. It is estimated that a 68 kg man has 5 533 428.6 J more potential energy while standing at the top of Mount Everest than while standing at the top of the CN tower.

3. How tall is the CN Tower?

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

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.