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3 years ago

If an object is moving eastward and slowing down, then the direction of its acceleration vector is

1 answer:

8 0

It would still be eastward because The direction of the velocity vector is always in the same direction as the direction which the object moves.

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Anyone know the answers to these questions

Lunna [17]

5. 36mph
6. PER-for each
7. 2000 divided by 330 equals 6.06 seconds

7 0

3 years ago

What is shot-curciting

rjkz [21]

Answer:

A path that allows most of the current in an electric circuit to flow around or away from the principal elements or devices in the circuit.

3 0

3 years ago

Using energy considerations and assuming negligible air resistance, show that a rock thrown from a bridge 23.5 m above water wit

Elodia [21]

As stated in the statement, we will apply energy conservation to solve this problem.

From this concept we know that the kinetic energy gained is equivalent to the potential energy lost and vice versa. Mathematically said equilibrium can be expressed as

$\Delta KE = \Delta PE$

$\frac{1}{2}mv_f^2-\frac{1}{2} mv_0^2 = mgh_2-mgh_1$

Where,

m = mass

$v_{f,i}$ = initial and final velocity

g = Gravity

h = height

As the mass is tHe same and the final height is zero we have that the expression is now:

$\frac{1}{2}v_f^2-\frac{1}{2} v_0^2 = gh_2$

$\frac{1}{2} (v_f^2-v_0^2) = gh_2$

$(v_f^2-v_0^2) = 2gh_2$

$v_f = \sqrt{2gh_2+v_0^2}$

$v_f = \sqrt{2(9.8)(23.5)+13.6^2}$

$v_f = 25.4m/s$

7 0

3 years ago

A torque of 12 N*m is applied to a solid uniform disk of radius 0.50 m. If the disk accelerates at 2.6 rad/s^2 what is the mass

VladimirAG [237]

Answer:

mass = 36.92 kg

Explanation:

We have given the torque $\tau =12 N-m$

Radius of the disk r = 0.50 m

Angular acceleration $\alpha =2.6rad/sec^2$

We know that torque is given by $\tau =I\alpha$ here I is moment of inertia and $\alpha$ is angular acceleration

So $12=I\times 2.6$

$I=\frac{12}{2.6}=4.6153kgm^2$

Moment of inertia is given by $I=\frac{1}{2}mr^2$

$4.6153=\frac{1}{2}m0.5^2$

m = 36.92 kg

The given answer is not matched with this answer but after calculation i got m =36.92 kg

4 0

4 years ago

The fact that some asteroids cluster in what are called asteroid families is probably the result of:

alisha [4.7K]

Answer:

The families are thought to form as a result of collisions between asteroids. In many or most cases the parent body was shattered, but there are also several families which resulted from a large cratering event which did not disrupt the parent body (e.g. the Vesta, Pallas, Hygiea, and Massalia families).

8 0

2 years ago