What is the average speed and average velocity till t -20 s-A- 1 m - s -1 m - sB- 0-1 m - sC- 1 m - s - 0D- 0-0

The correct option is C 1m/s, 0 For speed, Total distance = AB + BC + CD = 10 m + 0 + 10 m = 20 m ∴ Ave ...

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Standard VII

Physics

Average Velocity

What is the a...

Question

What is the average speed and average velocity till t = 20s?

1 m/s, -1 m/s

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1m/s, 0

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0, 1 m/s

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0, 0

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Solution

The correct option is B
1m/s, 0

For speed,

Total distance = AB + BC + CD

= 10 m + 0 + 10 m

= 20 m

$∴ A v e r a g e s p e e d = \frac{d}{t} = \frac{20}{20} = 1 m / s$

For velocity,

At t = 20s, the displacement is 0.

$∴ A v e r a g e v e l o c i t y = \frac{o}{t} = 0$

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What is the average speed and average velocity till t = 20s?

The correct option is B 1m/s, 0 For speed, Total distance = AB + BC + CD = 10 m + 0 + 10 m = 20 m ∴Average speed=dt=2020=1m/s For velocity, At t = 20s, the displacement is 0. ∴Average velocity=ot=0

The correct option is B
1m/s, 0

For speed,

Total distance = AB + BC + CD

= 10 m + 0 + 10 m

= 20 m

$∴ A v e r a g e s p e e d = \frac{d}{t} = \frac{20}{20} = 1 m / s$

For velocity,

At t = 20s, the displacement is 0.

$∴ A v e r a g e v e l o c i t y = \frac{o}{t} = 0$