activity_step3_scene.xml

<?xml version="1.0" encoding="utf-8"?>
<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:motion="http://schemas.android.com/apk/res-auto">

    <Transition
        motion:constraintSetEnd="@+id/end"
        motion:constraintSetStart="@+id/start"
        motion:duration="3000">

        <OnClick
            motion:clickAction="toggle"
            motion:targetId="@id/moon" />

        <KeyFrameSet>
            <KeyPosition
                motion:framePosition="50"
                motion:keyPositionType="parentRelative"
                motion:motionTarget="@id/moon"
                motion:percentY="0.5" />
        </KeyFrameSet>
    </Transition>

    <ConstraintSet android:id="@+id/start">
        <Constraint
            android:id="@id/moon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            motion:layout_constraintBottom_toBottomOf="parent"
            motion:layout_constraintStart_toStartOf="parent" />
        <Constraint
            android:id="@id/credits"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:alpha="0.0"
            motion:layout_constraintBottom_toBottomOf="@id/moon"
            motion:layout_constraintStart_toStartOf="parent"
            motion:layout_constraintTop_toTopOf="@id/moon" />
    </ConstraintSet>

    <ConstraintSet android:id="@+id/end">
        <Constraint
            android:id="@id/moon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            motion:layout_constraintBottom_toBottomOf="parent"
            motion:layout_constraintEnd_toEndOf="parent" />
        <Constraint
            android:id="@id/credits"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:alpha="1.0"
            motion:layout_constraintBottom_toBottomOf="@id/moon"
            motion:layout_constraintStart_toStartOf="parent"
            motion:layout_constraintTop_toTopOf="@id/moon" />
    </ConstraintSet>
</MotionScene>