3 years ago

A cyclist accelerates at a rate of 7m/s2. How long will it take the cyclist to reach a speed of 18m/s

Physics

1 answer:

notsponge [240]3 years ago

8 0

43.3m/s that is because the cyclist will be

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During maneuvers preceding the Battle of Jutland, the British battle cruiser Lion moved as follows (in nautical miles): 1.2 mile

lana66690 [7]

Answer:

total distance is 11.3 miles

Explanation:

Given data:

distance to north = 1.2 miles

distance to south at 38 degree east of south = 6.1 miles

distance to east of north at angle 89 degree = 4 miles

distance to east of north at angle 31 degree = 6.5 miles

considering each displacement as vector so we have

$\begin{pmatrix}0.0\\ 1.2\end {pmatrix} + \begin {pmatrix}3.8\\ -4.8\end{pmatrix} +\begin{pmatrix}4.0\\ 0.1\end {pmatrix}+\begin{pmatrix}3.3\\ 5.6\end{pmatrix} = \begin{pmatrix}11.1\\ 2.1\end{pmatrix}$

total distance is $\sqrt{11.1^2 + 2.1^2} \approx 11.3$

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2 years ago

The expression known as Froude's number is given as Upper F equals StartFraction v squared Over gl EndFraction . This number wa

bearhunter [10]

Answer: $v=5.529\ m/s$

Explanation:

Given

number is given as $=\frac{v^2}{gl}$

and $number=2.6$

$l=1.2\ m$

g=acceleration due to gravity $(9.8\ m/s^2)$

calculating for $v$

$v^2=gl(2.6)$

$v=\sqrt{2.6\times 9.8\times 1.2}$

$v=\sqrt{30.576}$

$v=5.529\ m/s$

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2 years ago

A car is moving South at a constant speed of 60 miles per hour. The force of the

Anastaziya [24]

Answer: 750 N

Explanation:

The net force is 1200 - 450 = 750 N

As we are told the speed is constant, then this force must be increasing the car's potential energy by climbing a hill.

F = mgsinθ

If we knew the car mass, we could find the hill slope angle.

If we knew the hill slope angle, we could find the car mass.

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2 years ago

Rahim is watching his favorite football team on television. In order to work, the television must be plugged into an electrical

Rasek [7]

I think the answer is B

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2 years ago

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Fynjy0 [20]

C real,inverted and smaller than the object

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2 years ago