The bouncing of a falling object from the ground can give us clues about the ground forces on the object during the bounce. A steel ball is dropped from a height h1= 1.6 m as shown in the figure below. It bounces off the ground with a velocity v2. You can split this problem into two different motions. 1) Dropping the ball from h1; and 2) ball in contact with the ground; Solve each as a separate problem by identifying the initial and final velocity for each part. Make sure you have the correct signs for the velocity. (a) Calculate the velocity v1 as the ball hits the ground. On the diagram indicate the positive and negative directions. Identify the initial velocity and final velocity for this part. Show the useful description, the physics concepts, principles, or equations, all mathematical steps, and any cross-checks or making sense of the answer. (b) Assume that the ball is in contact with the ground for t=0.1 s. If v2= 4.5 m/s, calculate average acceleration of the ball during contact. Ignore gravity during this part. On the diagram indicate the positive and negative directions. Identify the initial velocity and final velocity. Show the useful description, the physics concepts, principles, or equations, all mathematical steps, and any cross-checks or making sense of the answer. (c) Compare this acceleration to acceleration due to gravity by taking the ratio of the two
The bouncing of a falling object from the ground can give us clues about the ground forces on the object during the bounce. A steel ball is dropped from a height h1= 1.6 m as shown in the figure below. It bounces off the ground with a velocity v2.
You can split this problem into two different motions. 1) Dropping the ball from h1; and 2) ball in contact with the ground;
Solve each as a separate problem by identifying the initial and final velocity for each part. Make sure you have the correct signs for the velocity.
(a) Calculate the velocity v1 as the ball hits the ground.
On the diagram indicate the positive and negative directions. Identify the initial velocity and final velocity for this part. Show the useful description, the physics concepts, principles, or equations, all mathematical steps, and any cross-checks or making sense of the answer.
(b) Assume that the ball is in contact with the ground for t=0.1 s. If v2= 4.5 m/s, calculate average acceleration of the ball during contact. Ignore gravity during this part.
On the diagram indicate the positive and negative directions. Identify the initial velocity and final velocity. Show the useful description, the physics concepts, principles, or equations, all mathematical steps, and any cross-checks or making sense of the answer.
(c) Compare this acceleration to acceleration due to gravity by taking the ratio of the two.
Here we have to use equation of motion
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