1. (2 pts) A road sign reads: "Paducah -20 miles (32.19 km)" What's wrong with that?...

Question

Question

science physics

Answer 1

Answer #1

2. D is the correct answer

the distance travelled by light in a vacuum

3. The formula for avg speed is,

avg speed = 2 v * w / v+w

where v and w are the two speeds

Hence, in our case,

avg speed = 2 *50*90 / 50+90

= 64.28 m/sec

4. It will be negative.

As the g is directed always downward, hence taking UP as positive makes the sign of 'g' negative automatically.

Answer 2

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