The apps (mail and Safari) are crashing for some reason. I would start with this.
Double tap the home button to bring up the task bar where all of your recent apps will appear. Hold down on the mail app icon until it wiggles - along with the rest of the icons - and then tap the minus sign in the corner of the icon to cloase the app. Close Safai the same way and continue to close all of the apps in the task bar. Tap the screen above the task bar to return to the home screen.
Now restart your iPad by holding down on the sleep button until the red slider bar appears and slide to shut off. To power up, hold down on the sleep button until the Apple logo appears and then let go of the button. Try Mail and Safari again to see if that helped.
If that doesn't work - reset the iPad. Hold down on the sleep and home buttons at the same time for about 10-15 seconds until the Apple logo appears - ignore the red slider - let go of the buttons. After the iPad has started up, try the apps again.
One last thing you may try for Safari is this ... Go to Settings>Safari>Clear History, Cookies and Cache. Then restart the iPad like I explained above and try Safari again.