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chubhunter [2.5K]
3 years ago
13

A car travels for an hour at a speed of 20 km/r, the next two hours at a speed of 65 km/r and the final hour at a speed of 85 km

/r. What is the average speed of the car for the entire trip
Physics
1 answer:
valentinak56 [21]3 years ago
6 0

Answer:

170km/hr

Explanation:

Vav=v1+v+v3.....

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A woman climbs up a ladder in 1.37 s at 2.20 m/s. How tall is the ladder?
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Answer:

The ladder is 3.014 m tall.

Explanation:

To solve this problem, we must use the following formula:

v = x/t

where v represents the woman’s velocity, x represents the distance she climbed (the height of the ladder), and t represents the time it took her to move this distance

If we plug in the values we are given for the problem, we get:

v = x/t

2.20 = x/1.37

To solve this equation for x (the height of the ladder), we must multiply both sides by 1.37. If we do this, we get:

x = (2.20 * 1.37)

x = 3.014 m

Therefore, the ladder is 3.014 m tall.

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