If you are worried that you have an underlying disorder that causes you to bruise easily, talk to your doctor. They can run tests to see if there is any condition that may cause you to bruise due to slight bumps or very minor injuries. Let your doctor know of any other symptoms that you may be symptoms of larger disorders. Platelet disorders, such as those that underlie diseases like leukemia or AIDS, can cause increased bruising. If you have too few platelets, you may suffer from increased bleeding or dark red or purple bruises in addition to more frequent bruises. See your doctor if you are concerned about increased bruising. Blood thinners can cause increased bruising. If you are taking blood thinners, such as warfarin or heparin, ask your doctor to do a PT test to see if you can reduce the dose or eliminate taking blood thinners. If you cannot be taken off blood thinners, be more cautious in situations that may cause you to bruise - the medicine will make you more prone to bruising. If you have recently taken blood thinners but no longer are, you may still be at risk of increased bruising. The effects will wear off after a short time. Blood clotting disorders, such as vitamin K deficiency or hemophilia, can cause an increased rate of bruising when the blood takes longer to clot under your skin. You may have a clotting disorder if minor injuries cause large, deep bruises. You will also have other symptoms, such as nosebleeds, painful or tight joints, blood in your urine or feces, or excessive bleeding. Hemophilia is an inherited disorder, so have yourself checked if anyone in your family has it. See your doctor if you think you may have a clotting disorder. You may be able to rectify the disorder through diet changes, exercise, and prescription blood thinners.
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One-sentence summary -- Talk to your doctor. Ask your doctor if you have a platelet disorder. Stop taking blood thinners if possible. Check for signs of a blood clotting disorder.

Hypertext transfer protocol secure (HTTPS) is an encrypted website connection that your browser uses when you're accessing and viewing a web page. You can tell that the website you're viewing is using an HTTPS connection if you see "https:" at the beginning of the website's address in your web browser's address bar. Many websites use an HTTPS connection that will keep your PC safer from viruses and malware. To make sure your Gmail page is always using a secure HTTPS connection, click on the gear icon in the top-right corner. Scroll to the tab labeled "General." In the general menu, choose the option to always use an HTTPS connection. Your Gmail settings will be saved so anytime you use it, you'll be using an HTTPS connection. Your Gmail likely contains a lot of your important and personal information, so keep it secure with an HTTPS connection. To change your Facebook settings to use an HTTPS connection, click on the down arrow in the top right corner of your screen and select the "Account Settings" option. In the menu for your account settings, click on the option labeled "Security" to bring up the menu. In the "Secure Browsing" section, check the box labeled "Browse Facebook on a secure connection (https) when possible" to change the settings. Viruses and malware can breach your PC by using your Facebook account. If you use Google Chrome, Opera, or Firefox as your web browser, you can add an extension that will automatically request an encrypted connection whenever you visit a web page. If the page supports an HTTPS connection, then your browser will automatically use an encrypted connection. Download the extension to add it to your browser. Visit https://www.eff.org/https-everywhere to download the extension. If you sign into a public Wi-Fi connection or a connection that isn't yours, your PC can be breached by hackers, viruses, and malware. A Virtual Private Network (VPN) encrypts your information and keeps your PC secure so you can browse safely. You can subscribe to a popular VPN like Tunnel Bear, Cyber Ghost, or ProtonVPN. Many VPNs have a monthly fee in order for you to use their encryption services. Search online for free VPNs that you can use as well.
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One-sentence summary -- Use an HTTPS connection on websites to secure your PC. Select "Always use https" in Gmail. Set your Facebook to use an HTTPS connection. Install the HTTPS Everywhere extension for your browser. Protect your Wi-Fi connection with a VPN service.

The speed of an object is the total distance traveled divided by the time it took to travel that distance. Unlike a vector which is defined by having both a magnitude and direction, such as velocity, speed only has a magnitude. Magnitude is the size or amount of the term. Another way to think about magnitude is how far away the term is from zero. For example, if a car is moving at 15 miles per hour, it is 15 away from zero and therefore has a magnitude of 15. The formula to calculate speed is speed = total distance/total time Instantaneous speed is the rate at which an object is moving in a given moment. Speed is expressed as the ratio of distance to time. When traveling in a car, your instantaneous speed is what the speedometer reads at any point in time. It is the rate you are traveling at that moment. Common units for speed include miles per hour (mph) and kilometers per hour (kph). Average speed is the total distance traveled for a given amount of time. The formula for both average and instantaneous speed is the same, but average speed takes into account the whole trip, while instantaneous speed is only for a specific moment of time. The example used in the following steps will calculate average speed.
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One-sentence summary --
Define speed. Understand instantaneous speed. Understand average speed.