اختبار الكتروني: درس التسارع

                    <div class="selection">
                        <input id="answer<?= $a['id'] ?>" name="answer" value="<?= $a['id'] ?>" type="radio" data-right="<?= $a['isRight'] ?>" >
                        <label id="label<?= $a['id'] ?>" class="answers" for="answer<?= $a['id'] ?>" onabort="dd(<?= @$answered['Userquestion']['is_right'] ?>, <?= $a['isRight'] ?>)"   ><p><?= $a['text'] ?></p>

include - APP/View/Exam/index.ctp, line 43
View::_evaluate() - CORE/Cake/View/View.php, line 971
View::_render() - CORE/Cake/View/View.php, line 933
View::render() - CORE/Cake/View/View.php, line 473
Controller::render() - CORE/Cake/Controller/Controller.php, line 968
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 200
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 108

Warning (2): Trying to access array offset on value of type null [APP/View/Exam/index.ctp, line 43]
Code Context
                    <div class="selection">
                        <input id="answer<?= $a['id'] ?>" name="answer" value="<?= $a['id'] ?>" type="radio" data-right="<?= $a['isRight'] ?>" >
                        <label id="label<?= $a['id'] ?>" class="answers" for="answer<?= $a['id'] ?>" onabort="dd(<?= @$answered['Userquestion']['is_right'] ?>, <?= $a['isRight'] ?>)"   ><p><?= $a['text'] ?></p>
include - APP/View/Exam/index.ctp, line 43
View::_evaluate() - CORE/Cake/View/View.php, line 971
View::_render() - CORE/Cake/View/View.php, line 933
View::render() - CORE/Cake/View/View.php, line 473
Controller::render() - CORE/Cake/Controller/Controller.php, line 968
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 200
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 108

عندما يكون الخط أفقياً تكون السرعة ثابتة فيكون التسارع مقداره صفراً.

                    <div class="selection">
                        <input id="answer<?= $a['id'] ?>" name="answer" value="<?= $a['id'] ?>" type="radio" data-right="<?= $a['isRight'] ?>" >
                        <label id="label<?= $a['id'] ?>" class="answers" for="answer<?= $a['id'] ?>" onabort="dd(<?= @$answered['Userquestion']['is_right'] ?>, <?= $a['isRight'] ?>)"   ><p><?= $a['text'] ?></p>

include - APP/View/Exam/index.ctp, line 43
View::_evaluate() - CORE/Cake/View/View.php, line 971
View::_render() - CORE/Cake/View/View.php, line 933
View::render() - CORE/Cake/View/View.php, line 473
Controller::render() - CORE/Cake/Controller/Controller.php, line 968
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 200
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 108

Warning (2): Trying to access array offset on value of type null [APP/View/Exam/index.ctp, line 43]
Code Context
                    <div class="selection">
                        <input id="answer<?= $a['id'] ?>" name="answer" value="<?= $a['id'] ?>" type="radio" data-right="<?= $a['isRight'] ?>" >
                        <label id="label<?= $a['id'] ?>" class="answers" for="answer<?= $a['id'] ?>" onabort="dd(<?= @$answered['Userquestion']['is_right'] ?>, <?= $a['isRight'] ?>)"   ><p><?= $a['text'] ?></p>
include - APP/View/Exam/index.ctp, line 43
View::_evaluate() - CORE/Cake/View/View.php, line 971
View::_render() - CORE/Cake/View/View.php, line 933
View::render() - CORE/Cake/View/View.php, line 473
Controller::render() - CORE/Cake/Controller/Controller.php, line 968
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 200
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 108

عندما يكون الخط أفقياً تكون السرعة متغيرة فيكون التسارع مقداره 2.