A Baseball Rolls Off A 070 M?
A baseball rolls off a 070 m cliff. What is the speed of the baseball as it hits the ground?
Introduction
A baseball rolls off a 070 m high roof and strikes the ground 40.0 m from the base of the building. How fast was the ball going when it left the roof?
-The ball was going 40.0 m/s when it left the roof.
What Happened?
The baseball rolled off the 070 m length of roofing at a speed of 10 m/s. It then hit the ground and bounced upward, reaching a height of 6.5 m.
The Physics of It
Sir Isaac Newton’s laws of motion and gravity can explain why and how a baseball rolls off a 0.70 m high table.
In order for an object to move, it must be acted upon by a force. The greater the force acting upon an object, the greater the change in motion will be. When it comes to motion, there are three types of forces that can act upon an object: unbalanced forces, balanced forces, and friction.
In the case of a baseball rolling off a 0.70 m high table, there are two main forces acting upon it: the force of gravity and the force of friction. The force of gravity is always present and acts on all objects. The force of friction is present when two objects rub against each other. In this case, the baseball is rubbing against the surface of the table.
The amount of friction present depends on various factors, such as the smoothness of the surfaces in contact with each other, the weight of the object, and how hard the surfaces are being pushed together. In general, rougher surfaces have more friction than smoother surfaces and heavier objects have more friction than lighter objects.
The net force acting on an object is equal to the sum of all the forces acting on that object. If there are more forces acting on an object in one direction than another, then there is an unbalanced force and the object will move in that direction until there is a balance.
When a baseball is sitting on a table, there are two forces acting upon it: gravity and friction. The force of gravity is pulling downward on the baseball while the force of friction is pushing upward against it. These two forces cancel each other out and so the net force is zero—the ball doesn’t move.
As soon as you give the ball a nudge forward so that it starts to roll off the edge of the table, there is no longer any contact between the ball and table surface in front of it; therefore there is no frictional force pushing back against its forward motion—only gravity acts upon it now. As long as there remains a contact between ball and table behind it (creating friction), then eventually its forward momentum will be cancelled out by this drag force due to friction and rolling motion will stop altogether; at which point both ball and table would be at rest with respect to each other—and with respect to you who are watching!
The Aftermath
The baseball rolls off the 070 m cliff and eventually collides with the ground below. When it collides with the ground, it will do so with a force equal to its kinetic energy at the time of impact. The kinetic energy of an object is equal to half of its mass times its velocity squared.
Conclusion
The baseball will continue to roll off the 070M until it reaches the end of the field. At this point, it will stop and remain at rest.
