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3 years ago

A boat moves initially at 10 m/s, then accelerates at 2 m/s^2 for 10 s. What is the velocity of the boat after 10 s?

Physics

1 answer:

bija089 [108]3 years ago

6 0

Answer:

Explanation:

acceleration is the change in velocity of a body with respect to time

a = v-u/t

v is the final velocity

u is the initial velocity = 10m/s

t is the time taken = 10s

a is the acceleration = 2m/s²

substitute the values into the formula

2 = v-10/10

cross multiply

20 = v-10

v = 20+10

v = 30m/s

Hence the velocity of the body after 10s is 30m/s

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2 years ago

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Answer:

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The equation for the photoelectric effect is

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In this problem, we have

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Converting into electronvolts,

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So now we can re-arrange the equation of the photoelectric effect to find the work function of the metal

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3 years ago

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2 years ago

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