Jumping Lab Question ( Kinematics )

In summary, the conversation discusses a physics homework problem involving different positions and measurements, as well as mass and acceleration. The first question asks to find the initial velocity at take off, using magnitude and direction of acceleration while in the air. The second question asks to find the magnitude and direction of average acceleration from a crouching position to the height of a jump. The third question asks for the magnitude and direction of average acceleration from landing to crouching position. The student also mentions asking their teacher for help, but the teacher refused to answer any questions about the lab.
  • #1
limework
2
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Homework Statement



a.Standing(Tip Toes) - 0.15m
b.Crouching(As before you jump) - 0.35m
c.At the height of a jump - 0.36m
d.At the bottom of your landing - 0.67

Mass = 75kg

1. Find the initial velocity at "take off" ( remember to use magnitude and direction of your acceleration while you are in the air- use c --> d

2. Find the magnitude and the direction of the average acceleration ( Use b--->c)

3. Find the magnitude and direction of the average acceleration from when you "Touched down" to when you stopped in the crouch position ( use e---> f)

Homework Equations


The Attempt at a Solution



I am new to Physics and i asked my teacher for help but he said he would not answer any questions on this lab?

Can you please help. Maybe explain to me how to do it but I really want to learn.

Thanks!
 
Last edited:
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  • #2
Anyone?/
 
  • #3


Hello,

I am happy to help you with your lab question. First, let's define some variables:
- Initial velocity (u) = ?
- Final velocity (v) = ?
- Acceleration (a) = ?
- Distance (d) = 0.36m
- Mass (m) = 75kg

1. To find the initial velocity at take off, we can use the equation v^2 = u^2 + 2ad, where v is the final velocity, u is the initial velocity, a is the acceleration, and d is the distance. We know the final velocity is 0 at the peak of the jump and the distance is 0.36m. So, let's plug in the values we know: 0^2 = u^2 + 2(0.36)(-9.8). Solving for u, we get u = 1.9 m/s. Therefore, the initial velocity at take off was 1.9 m/s.

2. To find the average acceleration from b to c, we can use the equation a = (v-u)/t, where v is the final velocity, u is the initial velocity, and t is the time. We know the initial velocity is 0.35 m/s (from crouching) and the final velocity is 0 m/s (at the peak of the jump). We also know that the time taken to go from b to c is the same as the time taken to go from c to d. So, we can use the equation v = u + at to find the time (t). Plugging in the values, we get 0 = 0.35 + a(t). Solving for t, we get t = -0.35/a. Now, let's substitute this value of t in the first equation to find the average acceleration: a = (0-0.35)/(-0.35/a) = 0.35a/0.35 = a. Therefore, the magnitude and direction of the average acceleration from b to c is a = -9.8 m/s^2 (acceleration due to gravity) downwards.

3. To find the average acceleration from e to f, we can use the same equation as in part 2. Now, the initial velocity is 0 m/s (from landing) and the final velocity is 0.35 m/s (in the
 

Related to Jumping Lab Question ( Kinematics )

1. What is a jumping lab question in kinematics?

A jumping lab question in kinematics is a scientific question that involves the study of motion and its causes. It typically involves measuring the displacement, velocity, and acceleration of an object as it jumps or moves through space.

2. How do you set up a jumping lab question?

To set up a jumping lab question, you will need to have a clear research question and hypothesis, select the appropriate equipment and measurement tools, and determine the variables that will be measured. You will also need to establish a controlled environment and follow proper safety protocols.

3. What are some common variables to measure in a jumping lab question?

Some common variables to measure in a jumping lab question include time, distance, velocity, and acceleration. Other variables may include the mass and height of the object, as well as any external forces acting on the object.

4. What types of experiments can be conducted to answer a jumping lab question?

There are various types of experiments that can be conducted to answer a jumping lab question, such as free fall experiments, projectile motion experiments, and elastic collisions. These experiments can be performed using different setups and equipment to investigate different aspects of jumping and motion.

5. What are some real-world applications of studying jumping in kinematics?

Studying jumping in kinematics has many real-world applications, such as in sports science to improve athletic performance and prevent injuries, in engineering to design structures and vehicles that can withstand jumping forces, and in physics to understand the laws of motion and gravity. It can also help us better understand the movement and behavior of animals and humans.

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