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3 years ago

I REALLY NEED HELP WITH PHYSICS ASAP!!!Vf^2 = v0^2 + 2a (xf - x0)Solve for a

Physics

1 answer:

ELEN [110]3 years ago

7 0

Answer:

a. solve for a

$vf ^{2} = vo ^{2} + 2a(xf - xo) \\ 2a(xf - xo) = vf^{2} - vo ^{2} \\ a = \frac{vf^{2} - vo^{2} }{2(xf - xo)} \\ a = \frac{vf ^{2} - vo ^{2} }{2xf - 2xo}$

I hope I helped you ^_^

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A ball that has a mechanical energy of 65 J has 12 J of kinetic energy. The ball has

bulgar [2K]

Answer:

The ball has a potential energy of 53 J.

Explanation:

Mechanical energy, E = Kinetic energy + Potential energy

E = K.E + P.E

65 = 12 + P.E

P.E = 65 – 12

P.E = 53 J

Therefore the potential energy of the ball is 53 J

8 0

3 years ago

A tennis ball travels the length of the court 24m in 0.5s. Find the average speed

AnnZ [28]

Answer: average speed of the ball would be 48 mph

Explanation:

because all you have to do is multiply 24 x .5 and that gives you your answer

5 0

3 years ago

Choose all the answers that apply. Which of the following occurs during data analysis? observations are made statistical informa

denis23 [38]

Answer:

Both of them.

Explanation:

They are both because when your analyzing data , that is what happen's.

6 0

3 years ago

Saki is ice-staking to the left with velocity of 5 m/s. A steady breeze starts blowing. Causing saki to accelerate leftward at a

Pavlova-9 [17]

Answer:

Final velocity will be equal to 14 m/sec

Explanation:

We have given initial velocity u = 5 m/sec

Constant acceleration is given $a=1.5m/sec^2$

Time t = 6 sec

We have to find the final velocity

From first equation of motion $v=u+at$ , here v is final velocity, u is initial velocity , a is acceleration and t is time

So $v=5+1.5\times 6=14m/sec$

So equal final velocity will be equal to 14 m/sec

4 0

2 years ago

Your friend is trying to construct a clock for a craft show and asks you for some advice. She has decided to construct the clock

Anastasy [175]

Answer:

The period of the pendulum is $T = 1.68 \ sec$

Explanation:

The diagram illustrating this setup is shown on the first uploaded image

From the question we are told that

The length of the rod is $L = 80 \ cm$

The diameter of the ring is $d = 10 \ cm$

The distance of the hole from the one end $D = 15cm$

From the diagram we see that point A is the center of the brass ring

So the length from the axis of rotation is mathematically evaluated as

$AP = 80 + 10 -5 -15$

$AP = 70 \ cm = \frac{70}{100} = 0.7 \ m$

Now the period of the pendulum is mathematically represented as

$T = 2 \pi \sqrt{\frac{AP}{g} }$

$T = 2 \pi \sqrt{\frac{0.7}{9.8 } }$

$T = 1.68 \ sec$

4 0

3 years ago