How Do You Solve This AS Physics Kinematics Multi-Choice Question?

AI Thread Summary
The discussion focuses on solving a kinematics multiple-choice question related to constant acceleration. Participants emphasize the importance of using the equation s = 1/2at^2 for objects in free fall, noting that an object will fall 5 meters in one second and 20 meters in two seconds under Earth's gravity. The approach involves eliminating incorrect options based on calculations with SI units. It's highlighted that the goal is to identify the correct answer from the choices provided rather than calculating the exact solution. Understanding the relationship between acceleration, distance, and time is crucial for solving such problems.
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Homework Statement


All included in image provided. As you can see, it's a multi-choice qu


Homework Equations


Acceleration=Velocity/Time
Not sure what else...

The Attempt at a Solution


Uncertain about how to approach this question. Using SI units I eliminated B. Any help would be appreciated. Thanks :D
 

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Are you aware of a kinematics equation (for constant acceleration) that relates distance traveled to acceleration and time?
 
s=1/2at^2 when the initial velocity=0
 
seiei said:

Homework Statement


All included in image provided. As you can see, it's a multi-choice qu


Homework Equations


Acceleration=Velocity/Time
Not sure what else...

The Attempt at a Solution


Uncertain about how to approach this question. Using SI units I eliminated B. Any help would be appreciated. Thanks :D

Note that this is a multiple choice question.
You don't have to find the answer, you only have to find which one of these answers is the answer.

Your experience should tell you that an object falling on Earth [approximating g = 10] will fall to 5m in one second and to 20m in 2 seconds - an extra 15m.

This if a = 10, x = 5 and h = 15 then t1 = 1 and t2 = 2.

Substitute those values in and only one of the options will yield the correct answer.

I repeat - to emphasise:

This is a multiple choice question.
You don't have to find the answer, you only have to identify which one of the offered answers is the correct.

Alternately you can work with the equation you identified and derive the solution.
 
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