A 1.30 kg block slides on a frictionless horizontal surface until it encounters a spring with a force constant of 520 N/m. The block comes to rest after compressing the spring by the distance of 2.50 cm.What was the initial speed of the block ? 5.0 m/s 0.25 m/s 0.50 m/s 31.6 m/s

i don't need any derivation or explanation if it speeds up the answer! Thank you

The correct one out of the options, thank you

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

You start out by driving 107 miles north in 2 hours and 2 minutes, and then you stop and park for a while. Finally you drive another 96 miles north in 3 hours and 18 minutes. The average velocity for your entire trip was 30.45 miles per hour to the north. How much time did you spend parked? 0 hours 40 minutes 6 hours 40 minutes 1 hours 20 minutes 2 hours 40 minutes

i can not figure this out. the answer i out was wrong

Please send the solution in detail

Explain as you solve the problem.

I know this website says only to submit one question at a time but this word problem has 12 questions to answer. If you can only answer one at a time I guess we can start with #3. all help is greatly appreciated, please see the attachment. Thank you, Miguel