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I would at least like to know the formulas.

2 months ago

Guest #9847955

2 months ago

The formula for the time is **Time = (speed) / (acceleration)** .

If it slows 4 m/s every second, it takes (24/4) =__6 seconds__ to slow from 24 to zero.

========================================

If the speed at the beginning or end of the acceleration is zero, then the formula

for distance during acceleration is**D = 1/2 (acceleration) (time)²** .

1/2 (acceleration) x (time)² = 1/2 (4) (6)² = 1/2 (4) (36) =__72 meters__.

If it slows 4 m/s every second, it takes (24/4) =

========================================

If the speed at the beginning or end of the acceleration is zero, then the formula

for distance during acceleration is

1/2 (acceleration) x (time)² = 1/2 (4) (6)² = 1/2 (4) (36) =

Question

if an organism can not reproduce,is it still considered living?why?

Solution 1

The ability to reproduce is essential for a species, but not for an individual. There are some people that can't reproduce, but they're still alive!

Question

If objects travelling at near the speed of light gain mass because their energy of their motion is being converted into mass, the does a photon gain mass?

Solution 1

A photon travels __only__ at the speed of light, and has no mass at any lower speed.

If that makes sense to you, then there is a problem. But that's the way it is.

If that makes sense to you, then there is a problem. But that's the way it is.

Question

A people-moving conveyor-belt moves a 600-newton person a distance of 100 meters through the airport.

a. How much work was done?

b. The same 600-newton person lifts his 100-newton carry-on bag upward a distance of 1 meter. They

travel another 10 meters by riding on the “people mover.” How much work was done in this situation?

a. How much work was done?

b. The same 600-newton person lifts his 100-newton carry-on bag upward a distance of 1 meter. They

travel another 10 meters by riding on the “people mover.” How much work was done in this situation?

Solution 1

In a), no work is done to move horizontally 'across" gravity. In b), he does (m) (g) (h) = (100)(9.8)(1) = 980 joules of work to lift the bag, and then no more work is done by the belt to move both of them horizontally.

Question

What is the displacement after 6 seconds when a car is moving at 12m/s and coasts up a hill with a uniform aacceleration of -1.6 m/s^2

Solution 1

The kinematic formula using displacement, time, initial velocity, and acceleration:

x = v t+.5 a t^2

x= (12m/s)(6s) + .5(-1.6m/s^2)(6s)^2

x= 72m - 28.8m

x = 43.2 m

x = v t+.5 a t^2

x= (12m/s)(6s) + .5(-1.6m/s^2)(6s)^2

x= 72m - 28.8m

x = 43.2 m

Question

How do you solve sleep deprivation? And i am not trolling!

Solution 1

The ONLY way to reverse the effects of sleep deprivation is with extra sleep, without drugs. I'm not sure what trolling means.

Question

If a dune Buggy is traveling for 20 seconds at a speed of 8.5m/s how do I calculate the unknown quantities

Solution 1

Right now I can think of about 50 unknown quantities, and the one you need to find is the most unknown of all of them, because you haven't even sait WHAT quantity you need to find.

Question

What are two things that the amount of gravitational force between two object depends on

Solution 1

1). the product of the two masses being gravitationally attracted to each other

2). the distance between their centers of mass

And that's IT. The gravitational force between them depends on

only those two things, nothing else.

2). the distance between their centers of mass

And that's IT. The gravitational force between them depends on

only those two things, nothing else.

Solution 2

The equation behind this question is:

g = (G*m*M) / (r^2)

g is the gravitational force

G is the Universal Gravitational Constant

M is the mass of one object

and m is the mass of the other constant

r is the distance between the two objects

g = (G*m*M) / (r^2)

g is the gravitational force

G is the Universal Gravitational Constant

M is the mass of one object

and m is the mass of the other constant

r is the distance between the two objects

Question

what is the mechanical energy of a falling apple with a kinetic of 5.2 joules and a potential energy of 3.5 joules

Solution 1

Mechanical energy in this problem is the sum of the kinetic energy and the potential energy: 5.2+3.5= 8.7 Joules

Question

How far will a free falling object have fallen from a position of rest when it's instantaneous speed is 10m/s?

Solution 1

Use kinematic equation:

vf² = vo² + 2g(xf - xo)

vf = final velocity = 10 m/s

vo = initial velocity = 0 m/s (i.e. at rest)

g = 9.81 m/s²

xf - xo = distance traveled = d

*rearrange equation to solve for d

(vf² - vo²)/(2g) = d

d = ((10 m/s)² - (0 m/s)²)/(2*9.81 m/s²)

d = (100 m²/s²)/(2*9.81 m/s²)

d = 5.097 m

vf² = vo² + 2g(xf - xo)

vf = final velocity = 10 m/s

vo = initial velocity = 0 m/s (i.e. at rest)

g = 9.81 m/s²

xf - xo = distance traveled = d

*rearrange equation to solve for d

(vf² - vo²)/(2g) = d

d = ((10 m/s)² - (0 m/s)²)/(2*9.81 m/s²)

d = (100 m²/s²)/(2*9.81 m/s²)

d = 5.097 m

Question

Gravity and friction are two kinds of

a.inertia

b.forces

c.masses

d.gravity

a.inertia

b.forces

c.masses

d.gravity

Solution 1

The answer is b, gravity and friction are forces.

Solution 2

**Answer: B forces Hope this helps!!**

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