Physics Worksheet for Senior High School : Accelerated Linear Motion

Name :                                           Class :                                            Grup :

Learning Purpose

1.        The students can determine the control variable,  response variable and manipulation variable of the experiments about the influence of the distance to the travel time

2.        The students  can design experiments to find the influence of the distance to the travel time.

The Problem Formulation

1.        How is the relationship between the distance to the travel time?

Hypothesis

Formulate a hypothesis to answer the problem and cab be tested using the equipment and materials below.

If the distance is longer, the time taken is longer too.

 

Materials and Equipment

1.        Trolley                  1 unit

2.        Load                     100 gr 

3.        Pulley                   1 unit

4.        Strap                     1 meter

5.        Ruler                    1 unit

6.        Stopwatch                        1 unit

Procedure

1.        Formulate the operational definitions of variable

Formulate the manipulation variable, the response variable and the control variable along with the operational definition of variables.

Manipulation variable : the distance track of trolley

 

Response variable : the time taken

Control variable :the mass of trolley, the mass of load, the mass of pulley

2.        Design the experiment. Write the planning of experiment to test your hypothesis, based on the variabels that you have formulated.

Assemble equipments and materialsas shown.Then giveless weight to the trolley until

it can run. Then determine thedistance ofthe trackon aboard. After thatrelease the

trolley and simulta neously measures the travel time with a stopwatch.

3.        Make the tables and graphs. Make a chart to record the data that you got. Make a chart to showing the relationship between manipulation variables with the response variable based on the data that you have got.

Distance (m)	Time (t)	t2
0,6	0,79	0,6241
0,65	0,83	0,6889
0,7	0,87	0,7569
0,75	0,9	0,81
0,8	0,94	0,8836

Discussion and Analysis

1.        Formulate the conclusion. Based on the data and the chart above, what is the conclusion that you get?

The longer track cause longer time required and the acceleration will also be higher.

2.        Doing Inference. Is your graph similar to the graph with other groups?

The graph will be same because the manipulation variable of the data that use to

experiment is same each other.

3.        Doing the calculations.  The slope of the graph distance on time travel is acceleration. Calculate the acceleration!

from the graph, we can find the acceleration. That is  .

Calculations

 
 

Application

Taking water  from the well using a pulley. At the time of taking water from the well we exert a force on the pulley by pulling the rope that connect with the pulley. So this force is will stir the pulley. Can this system have zero acceleration?

This system could not have the acceleration equal to zero because we cannot set the speed of

pulley when pulling it.Acceleration will be equal to zero if the speed of pulley is constant.

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