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4 years ago

What kind of animal do you have and what do you call your animal.

Physics

2 answers:

Katena32 [7]4 years ago

8 0

Answer:

i have a dog call humberto :)

Explanation:

BaLLatris [955]4 years ago

7 0

Answer:

i have 3 dogs named chorizo pixie and sugar and a hedge hog named sonic

Explanation:

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What is a push or pull that acts on a object

sdas [7]

Answer:

Force is defined as a push or pull acting on an object. Forces include gravity, friction, and applied force. Force causes changes in the speed or direction of motion. These changes are called acceleration.

Explanation:

7 0

3 years ago

A sprinter reaches his maximum speed in 2.6 seconds from rest with constant acceleration. He then maintains that speed and finis

Delvig [45]

Answer: maximum speed vmax = 11.42m/s

Explanation:

Given that the sprinter maintained constant acceleration during the first 2.6 seconds.

a = vmax/ta .......1

The distance covered during the acceleration period is;

da = 0.5a(ta)^2 .....2

Substituting equation 1 to 2

da = 0.5(vmax/ta)(ta)^2 = 0.5vmax(ta) .....3

The distance covered during the period of constant speed vmax is;

dv = vmax (tv) ......4

The total distance travelled is

d = da + dv = 100 (Given)

da + dv = 100 ......5

Substituting equation 3 and 4 into 5

0.5vmax(ta) + vmax(tv) = 100

vmax ( 0.5ta +tv) = 100

vmax = 100/(0.5ta + tv) ....6

But,

t = ta + tv

tv = t - ta .......7

Substituting equation 6 into equation 7

vmax = 100/(0.5ta + t - ta)

vmax = 100/(t-0.5ta)

t = 10.06 s

ta = 2.6 s

Substituting the values;

vmax = 100/(10.06 -0.5(2.6))

vmax = 11.42m/s

Note:

ta = acceleration time

tv = constant velocity vmax time

t = overall time

da , dv and d = acceleration, constant velocity and overall distance covered respectively.

8 0

4 years ago

3000 J of work are done by an elevator on a man lifting him to a height of 2.5 m in 0.4 seconds? how much energy has the man ga

ANEK [815]

The energy that the man has gained in being lifted is 3000J which is in the form of potential energy.

<u>Explanation:</u>

Given:

Work done, W = 3000J

Height, h = 2.5m

Time, t = 0.4 seconds

Energy gained = ?

As the man gets lifted, it gains potential energy.

Potential energy will be equal to the work done by the elevator.

We know,

potential energy = mgh

Thus, the energy that the man has gained in being lifted is 3000J which is in the form of potential energy.

3 0

3 years ago

Was Copernicus heliocentric or geocentric

Anuta_ua [19.1K]

Copernicus preferred the heliocentric model.

8 0

4 years ago

Read 2 more answers

A ball starts at rest and rolls down an inclined plane. The ball reaches 7.5 m/s in 3 seconds. What is the acceleration?

just olya [345]

Answer:

$a=2.5\ m/s^2$

Explanation:

<u>Motion With Constant Acceleration </u>

It's a type of motion in which the velocity of an object changes uniformly over time.

The equation that describes the change of velocities is:

$v_f=v_o+at$

Where:

a = acceleration

vo = initial speed

vf = final speed

t = time

Solving the equation for a:

$\displaystyle a=\frac{v_f-v_o}{t}$

The ball starts at rest (vo=0) and rolls down an inclined plane that makes it reach a speed of vf=7.5 m/s in t=3 seconds.

The acceleration is:

$\displaystyle a=\frac{7.5-0}{3}$

$\boxed{a=2.5\ m/s^2}$

7 0

3 years ago