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Why does a ball fall to Earth when you throw it up in the air?
gravity
What is the boy throw a stone vertically upward with an initial velocity of 6.0 ms?
The boy throws a stone vertically upward with an initial velocity of 6.0 m/s, meaning the stone is moving against gravity. It will reach a maximum height and then fall back down due to gravity. The stone will eventually return to the ground after reaching its highest point.
What forces are needed to throw a ball?
When you throw a ball, you mainly use the force generated by your muscles to propel the ball forward. This force is transferred to the ball through your arm. Additionally, the force of gravity acts on the ball once it is released, causing it to fall towards the ground.
What are some tips for pitchers on keeping the ball low in the strike zone?
It may sound stupid, but throw less heat. If you throw softer, the ball has more time to fall before it reaches the plate.
What are the differences between projectile motion and free fall?
Projectile motion involves an object moving both horizontally and vertically, while free fall is when an object falls only vertically due to gravity. In projectile motion, the object has an initial horizontal velocity, while in free fall, the object is only affected by gravity.
How the velocity of the vertically thrown ball varies with time?
The ball is affected by the force of the earth's gravity.
If a ball is thrown vertically upwards and the acceleration on it is neg 9.8 due to gravity will the sign change when the ball changes direction to fall back down thus giving an acceleration of 9.8?
Yes. On the way up, negative acceleration is taking place because the ball is moving up and gravity is acting in the opposite direction. On the way back down, acceleration is positive, and the object starts at rest.
What explains why the cart always catches the ball and the ball doesn't fall behind the moving cart?
The cart and the ball are both subject to the same gravitational acceleration, so they fall at the same rate. The cart's horizontal motion keeps pace with the vertical motion of the ball, allowing it to catch up. This is the principle of inertia and the relationship between vertical and horizontal motion.
How do gravity and friction work together to cause a ball moving throgh the air to fall toward earth?
Gravity is the only thing that makes the ball fall toward Earth. All friction does is slow the rate of the fall slightly, and make it take longer.
Why does a falling ball fall in a curved path?
A falling ball follows a curved path due to the combination of its initial horizontal velocity and the acceleration due to gravity pulling it downward. As the ball falls, gravity acts on it, causing it to continuously accelerate vertically but not horizontally, resulting in a curved trajectory.
How does a roulette ball stop?
The roulette ball stays in motion due to centrefugal force. Since the ball is moving fast it "wants" to just go straight (Newton's 1st law) but the contact force of the metal track exerts an inward force that keeps it moving in a circle. Eventually, as the ball loses momentum, the force of gravity will be greater and the ball will then fall into a pocket.
How does a ball stop?
The roulette ball stays in motion due to centrefugal force. Since the ball is moving fast it "wants" to just go straight (Newton's 1st law) but the contact force of the metal track exerts an inward force that keeps it moving in a circle. Eventually, as the ball loses momentum, the force of gravity will be greater and the ball will then fall into a pocket.
