What is the acceleration of a tennis ball as it leaves your hand?

What is the acceleration of a tennis ball as it leaves your hand?

Assume that air resistance is negligible, so the tennis ball can be considered to be in free-fall, with an acceleration of magnitude g = 9.80 m/s^2.

Which of the two principles conservation of momentum and conservation of mechanical energy must be applied to determine the final speed of the carts and why?

Which of the two princples, conservation of momentum and conservation of mechanical energy, must be applied to determine the final speed of the carts, and why? Only conservation of momentum, because the momentum lost by one cart is gained by the other and there is only one unknown quantity.

How fast does a tennis ball move as it leaves the racket?

�As a tennis ball is struck, it departs from the racket horizontally with a speed of 28.0 m/s. The ball hits the court at a horizontal distance of 19.6 m from the racket.

What force causes a tennis ball to move?

Thrust – momentum of the racquet pushing the ball forward. Gravity – the weight of the ball acts downward from the ball’s center of gravity. Drag – refers to the force, in this case – air resistance, acting in the opposite direction (flight direction) of the movement of an object.

What is the acceleration of a ball thrown upward after it has left the hand?

When a ball is thrown upward, its acceleration always remains constant which is equal to the acceleration due to gravity.

What is the acceleration of a ball that is dropped off the side?

A free-falling object has an acceleration of 9.8 m/s/s, downward (on Earth).

What is the 2 law of conservation of energy?

The law of conservation of energy states that energy can neither be created nor destroyed – only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it’s added from the outside.

What is the formula for the law of conservation of momentum?

The formula for the Law of Conservation of Momentum is p=p’ or m1v1+m2v2=m1v1’+m2v2′. This equation shows us that the sum of the momentum of all the objects in the system is constant.

What is the formula for momentum collision?

Before the collision, one car had velocity v and the other zero, so the centre of mass of the system was also v/2 before the collision. The total momentum is the total mass times the velocity of the centre of mass, so the total momentum, before and after, is (2m)(v/2) = mv.

What is the physics behind tennis?

Why a moving tennis ball reduces in speed?

The friction force is usually backward, reducing the horizontal component of the ball’s forward velocity. Friction may act differently, though, if the ball has excessive topspin, or forward rotation of the ball.

What is the fastest acceleration of a tennis ball?

In the fastest measured tennis serve, the ball left the racquet at 73.14 m/s. A served tennis ball is typically in contact with the racquet for 30.0 ms and starts from rest. Assume constant acceleration.

What is Newton’s first law of tennis?

Newton’s first law states that an object at rest stays at rest and an object in motion stays in motion at the same speed, with the same direction unless acted upon by an unbalanced force. Using a tennis racket to strike a tennis ball is a prime example of unbalanced force acting upon an object in motion.

Can a ball move without force?

In the absence of any forces, no force is required to keep an object moving. An object (such as a ball) tossed in the earth’s atmosphere slows down because of air resistance (a force).

What is the first law of motion in tennis?

Newton’s first law of motion states that any object that is moving will continue moving unless an external force is applied to stop it from moving. Within the game of tennis, this concept is easily seen every time a player hits the ball.

Is the acceleration of the ball equal to zero?

For example, take a ball that has been thrown into the air. At the moment the ball has reached its highest location, the ball has zero velocity. Nonetheless, its direction is changing, which means it has a changing (non-zero) acceleration.

What is the kinetic energy of the ball when it leaves your hand?

The kinetic energy of the ball as it leaves your hand (KEi) is exactly equal to the potential energy of the ball at the height of its trajectory. It has transferred the kinetic energy you imparted to it entirely to potential energy (its not moving at the very top of the arc so its KE is 0).

What is the acceleration of the ball when it is moving up when it is at the maximum height?

What is the acceleration of the ball when it is moving up, when it is at the maximum height, and when it is moving down? (Note: The acceleration graph is shown in red.) It is always negative. The acceleration is negative when the ball is moving up, zero at the top, and positive when the ball is moving down.