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vovikov84 [41]
3 years ago
14

if the acceleration is in the same direction as the velocity, what happenes to the speed of an object?

Physics
1 answer:
mixer [17]3 years ago
6 0
The speed will go increasing with time and the proportionality constant is the acceleration precisely.
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A pesky rabbit has been feeding on Mrs. Cromwell’s prized flowers. In order to put an end to this she devised the simple trap be
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Answer:

The minimum diameter of the stick to bear the normal stress as 100 psi is 0.1785 in.

Explanation:

Taking moment along point A

\sum M_A=0\\F_{BC} sin 60 \times 48 -13 \times 8=0\\F_{BC}=2.502 lb_f

Also normal stress is given as 100 psi

Now

                      \sigma=\frac{F}{A}\\100=\frac{2.502}{\pi \frac{d^2}{4}}\\d^2 =\frac{4 \times 2.502}{100 \pi }\\d^2=0.031856\\d=\sqrt{0.031856}\\d=0.1785 inch

The minimum diameter of the stick to bear the normal stress as 100 psi is 0.1785 in.

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Write a hypothesis about the effect of the fan speed on the acceleration of the cart. Use the "if . . . then . . . because . . .
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Answer:

As an object accelerates i.e., change it's velocity(either direction or speed), the position of the object depends on two factor; If the acceleration was direction based then it might have a zero displacement for eg: if it travels in circle. or it might have a net displacement if it travels in a straight line, quantitatively

where,

s = displacement

u = initial velocity

v = final velocity

a = acceleration

t = time

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:)

Explanation:

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Given data

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*The given distance is s = 1.5 m

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P=\frac{F\mathrm{}s}{t}

Substitute the known values in the above expression as

\begin{gathered} P=\frac{(583)(1.5)}{(2.1)} \\ =416.42\text{ W} \end{gathered}

Hence, the power it takes for a 583 N student to climb up 1.5 m stairs in 2.1 seconds is P = 416.42 W

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