Im a real dummy to physics Help with questions please

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A car accelerates from rest to 72 km/h in 5 seconds, requiring the calculation of its acceleration in meters per second squared. A ball thrown upward at 36 m/s needs to be analyzed for the time it takes to return to its starting point. Barbara's journey involves traveling 20 km north, 40 km east, and 50 km south, prompting a question about the displacement needed to return to her initial position. Participants emphasize the importance of attempting problems and showing work to receive assistance. Engaging with the material and using available resources, like textbooks, is encouraged for better understanding of physics concepts.
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A car starts from rest and accelerates to a speed of 72 km/h in 5 seconds. Assuming uniform acceleration, what is the acceleration in meters per second squared?

A ball is thrown straight up witha speed of 36 m/s. How long does it take to return to its starting point?

Barbara travels 20 km Northward, then travels 40 km Eastward, then continues for 50 km in a Southward direction. What displacement will now take her back to her initial position?
 
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Do you know any basic kinematic equations?
 
No, not without the book. I'm not good in physics at all...
 
OK, so use the book until you've learned them.

We have a policy here, which is posted at the top of the Homework section of PF. It states that you have to make an attempt at your problems and show your work in order to receive help.

So let's have it! :biggrin:
 

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