Richard is a Civil Engineer at a construction site building the launch pad for NASA/Boeing's Space Launch System (SLS), the rocket that will send astronauts to Mars and is the most powerful rocket ever made! Joel is one of the Aerospace Engineers that designed the SLS, and is sent to the construction site to make sure Richard's launch pad can handle it. Richard is standing next to a heavy wrecking ball, which carries a 850 µC charge, when Joel walks by making fun of his design to the other Aerospace Engineers he is with. The Civil Engineers at the site look at Richard, demanding that he does something about Joel. When Joel is 10 m away from the wrecking ball, Richard takes a small 0.2 kg bolt that which carries a 110 µC charge, holds it at a point between Joel and the ball (at a distance 0.5 m away from the center of the ball), and releases it. How fast is the bolt going when it strikes the back of Joel's helmet? (Joel has a kevlar helmet and is safe.)

Please solve and answer the question correctly please. Thank you!

Hello, I need help with question 4. Please and thank you.

I couldn’t solve this problem during lecture. Please help me out! Thank you. Answer both boxes or do not attempt please.

Please.solve with explanation