2 years ago

What’s the net force of an object being throwing into the air

Physics

1 answer:

timurjin [86]2 years ago

4 0

Answer: forces acting on an object being thrown into the air is gravity and possibly air resistance

Explanation:

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A boat takes off from a dock at 2.5 m/s and speeds up at 4.2 m/s squared for six seconds how far has the most traveled

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The boat's position $x$ relative to its starting point $x_0=0$ is determined by

$x=x_0+v_0t+\dfrac12at^2$

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$x=\left(2.5\,\dfrac{\mathrm m}{\mathrm s}\right)(6\,\mathrm s)+\dfrac12\left(4.2\,\dfrac{\mathrm m}{\mathrm s^2}\right)(6\,\mathrm s)^2$

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Light from a laser of wavelength λ1 shines normally on a pair of narrow slits separated by distance D. This results in a differe

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Explanation:

The angular position of first intensity maxima is given by the expression

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putting the values given in the problem. ,

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Now wavelength has been increased to 2λ₁

angular separation of first maxima

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An occupant of a car has a chance of surviving a crash if the deceleration during the crash is not more then 30 g. Calculate the

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Answer:

20,850 N

Explanation:

We can solve the problem by using second Newton's Law:

$F=ma$

where

F is the force

m is the mass

a is the acceleration

In this problem, we have:

m = 70 kg is the mass

$a=-30 g=-30 (9.8 m/s^2)=-294 m/s^2$ is the acceleration (which is negative, because it is a deceleration)

So, we can use the equation above to find the force:

$F=(70 kg)(-294 m/s^2)=-20580 N$

and the negative sign simply means that the force is in the opposite direction to the motion.

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