What Are the Correct Answers to These Multiple Choice Physics Questions?

[MCS]

Here are some muliple choice questions I am stuck on. Thanks in advance for help anyone can give me.

1) A falling object that has reached its terminal speed continues to gain?
a.speed
b.both speed and acceleration
c.acceleration
d.neither speed nor acceleration.
I think the answer is D because once and object reaches terminal speed nothing changes...

2)A car travels 30 meters in 5 seconds. What is its average speed?
a.6 m/s
b.25 m/s
c.35 m/s
d.150 m/s
I think the answer in B

3)It takes 6 seconds for a stone dropped from rest to hit the botom of a well. What is its final speed?
a.6 meters/second
b.30 meters/second
c.36 meters/second
d.60 meters/second.
I think the answer is D.

 

[Gyroscope]

You got 1 and 3 right. Congratulations! :)
Check 2. How do you define average speed?

 

[arildno]

Why 2b?

 

[MCS]

I am not sure about average speed :-/ I will look in my book again

 

[MCS]

so #2 is A?

 

[denverdoc]

yes = 30/5

 

[MCS]

thanks :-D

 

[denverdoc]

No problem, wish they were all so straightforward.

 

[MCS]

so do I...lol I am having a hard time with this course. The book is no help with these questions..it is like they took these questions from a totally different book.