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3 years ago

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A car drives around a curve with a radius of 42 m at a velocity of 24 m/s. What is the centripetal acceleration of the car?

2 answers:

defon3 years ago

8 0

Hope this helps you.

Vaselesa [24]3 years ago

4 0

14!!!!!!!!!!!!!!!!!!!!

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What is your operational definition for a fast reaction time?

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The ability to react to a certain stimulus with a speedy and effective manner

Explanation:

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2 years ago

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Answer:

$41.81^{\circ}$

Explanation:

The tidal current flows to the east at 2.0 m/s and the speed of the kayaker is 3.0 m/s.

Let Vector $\overrightarrow{OA}$ is the tidal current velocity as shown in the diagram.

In order to travel straight across the harbor, the vector addition of both the velocities (i.e the resultant velocity, $\vec {R}$ must be in the north direction.

Let $\overrightarrow{AB}$ is the speed of the kayaker having angle \theta measured north of east as shown in the figure.

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Now, for this condition, from the triangle OAB

$|\overrightarrow{AB}|\sin \theta=|\overrightarrow{OA}|$

$\Rightarrow \sin\theta=\frac{|\overrightarrow{OA}|}{|\overrightarrow{AB}|}=\frac 2 3$

$\Rightarrow \theta=\sin^{-1}\frac23$

$\Rightarrow \theta=41.81^{\circ}$

Hence, the kayaker must paddle in the direction of $41.81^{\circ}$ in the north of east direction.

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3 years ago

When an object experiences uniform circular motion the direction of the net force is?

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In an uniform circular motion, the direction of the net force on the object is radially inward, passing through the center of the circle.

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6.35 grams of carbon will require oxygen

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2 years ago

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2 years ago