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Phantasy [73]
3 years ago
5

An object is accelerating from rest at a rate of 3 m/s2.How long will it take the object to attain 18 m/s ? *

Physics
1 answer:
Temka [501]3 years ago
7 0
Initial velocity =0, a=3m/s2, final velocity =18m/s, 18=3t, t=6 sec
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A long jumper can jump a distance of 7.4 m when he takes off at an angle of 45° with respect to the horizontal. Assuming he can
GenaCL600 [577]

Answer:

0.02 m

Explanation:

R₁ = initial distance jumped by jumper = 7.4 m

R₂ = final distance jumped by jumper = ?

θ₁ = initial angle of jump = 45°

θ₂ = final angle of jump = 42.9°

v = speed at which jumper jumps at all time

initial distance jumped is given as

R_{1}=\frac{v^{2}Sin2\theta _{1} }{g}

final distance jumped is given as

R_{2}=\frac{v^{2}Sin2\theta _{2} }{g}

Dividing final distance by initial distance

\frac{R_{2}}{R_{1}}=\frac{Sin2\theta _{1}}{Sin2\theta _{2}}

\frac{R_{2}}{7.4}=\frac{Sin2(42.9)}{Sin2(45))}

R_{2} =7.38

distance lost is given as

d = R_{1} - R_{2}

d = 7.4 - 7.38

d = 0.02 m

8 0
3 years ago
Verify the following equations:3² ×3³=243
e-lub [12.9K]

The equations are 3^2\times \:3^3=243

What is the formula used to calculate the equation?

To solve the equation using the formula of x^{2} * x^{3}

Find the equation by using formula.

On comparing with 3^2\times \:3^3=243

We get,  =(3*3)(3*3*3)

         =9*27

  Hence the equation is   =243

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brainly.com/question/28440534

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4 0
1 year ago
What is 60mph (miles per hour) in meters per second? ( A mile is 5280ft)<br> please someone help me
777dan777 [17]

Answer:

60mph=26.8224meters per second

Explanation:

4 0
3 years ago
A coil 3.55 cm in radius, containing 470 turns, is placed in a uniform magnetic field that varies with time according to B=( 1.2
slavikrds [6]

The Electric current is 1.11* 10^{-4}A


Given that the coil's radius is 3.55 cm (0.35 m),

The formula for the coil's area is A = r2 A = (3.14) (0.35)2 = 0.005024 m2.

R = Resistance = 600 N = Number of spins = 500 B = Magnetic field = (0.0120)

t + (3 x 10⁻⁵) t⁴

The number t = 5 is substituted for taking the derivative at both the induced current and the electric current.

The Electric current is therefore 1.11* 10^{-4}A
Electric current - The rate of electron passage in a conductor is known as electric current. The ampere is the electric current's SI unit. Electrons are little particles that are part of a substance's molecular structure. These electrons can be held loosely or securely depending on the situation.

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7 0
2 years ago
Read 2 more answers
A rocket ship leaves Earth's atmosphere. Its initial velocity is less than its final velocity. What is this an example of?
77julia77 [94]
I believe this would be an example of positive acceleration as the initial velocity of the rocket is less than the final velocity, indicating that the rocket is accelerating and thus is positive.
6 0
3 years ago
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