3 years ago

Niagara Falls is 51 meters high. If you dropped a ball off the ledge, how much time would it take it to hit the water?

Physics

1 answer:

UNO [17]3 years ago

7 0

Answer

t = 3.23s

Explanation:

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A 500kg car skids to a stop at a traffic light, leaving behind a 18.25m skid mark as it comes to a rest. Assuming that the car i

Nastasia [14]

Answer:

Coefficient of friction will be 0.587

Explanation:

We have given mass of the car m = 500 kg

Distance s = 18.25 m

Initial velocity of the car u = 14.5 m/sec

As the car finally stops so final velocity v = 0 m/sec

From second equation of motion

$v^2=u^2+2as$

$0^2=14.5^2+2\times a\times 18.25$

$a=-5.76m/sec^2$

We know that acceleration is given by

$a=\mu g$

$5.76=\mu\times 9.81$

$\mu =0.587$

So coefficient of friction will be 0.587

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4 years ago

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nikklg [1K]

P = m x v

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3 years ago

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A. If two objects collide, each object exerts a force in the same direction as the other.

Explanation:

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Micah knows that a car had a change in velocity of 15 m/s. What does micah need to determine acceleration.

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