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3 years ago

At which part of its orbit is the planet traveling at the slowest speed? A, B, C, or D

Physics

2 answers:

bija089 [108]3 years ago

6 0

B-Because the planet travels slowly when it is far away from the sun

Natali [406]3 years ago

3 0

I think its D im not sure tho

You might be interested in

If a car moves with constant velocity, does it also move with a constant speed?

GarryVolchara [31]

Answer:

Yes. The fact that an object moves at constant velocity implies that its speed is also constant. Note that the converse statement isn't necessarily true.

Explanation:

Velocity is a vector. For two vectors to be equal to each other,

their magnitudes (sizes) need be the same, and
they need to point in the same direction.

In motions, the magnitude of an object's velocity is the same as its speed.

If the car moves with a constant velocity, that means that

the magnitude of its velocity, the speed of the car, is constant;
also, the direction of the car's motion is also constant.

In other words,

$\text{Velocity } \vec{v}\text{ is constant} \implies \text{Speed }v\text{ is constant}$ .

Note that the arrow here points only from the velocity side to the speed side. It doesn't point backward because knowing that the speed of an object is constant won't be sufficient to prove that the velocity of the object is also constant. For example, for an object in a uniform circular motion, the speed is constant but the direction keeps changing. Hence the velocity isn't constant.

3 0

3 years ago

Use the drop-down menus to complete each statement.

sp2606 [1]

Answer: The acceleration of an object will decrease

Explanation: This happens as if the mass of an object increases then the acceleration of the body decreases as acceleartion is directly proportional to the mass of the body by Newton's 2nd law F=MA we can say the more mass an object has the more net force needs to be applied to make it start accelerating

8 0

4 years ago

Read 2 more answers

a 40 kg boy jumps off the side of the pool. when he hits the water, he is traveling 3 m/s. how much kinetic energy does he have

Vladimir79 [104]

3 m/s because when he hits the water he will be traveling at the same speed

4 0

4 years ago

A uniform ladder of length l rests against a smooth, vertical wall. If the coefficient of static friction is 0.50, and the ladde

Ronch [10]

Answer:

X = 5.44 m

Explanation:

First we can calculate the normal force acting from the floor to the ladder.

W₁+W₂ = N

W1 is the weigh of the ladder

W2 is the weigh of the person

So we have:

$m1g+m2g=N$

$N=755.37 N$

The friction force is:

$F_{force}=\mu N=0.5\cdot 755.37=377.68 N$

Now let's define the conservation of torque about the foot of the ladder:

$\tau_{ledder}+\tau_{person=\tau_{reaction}}$

$m_{1}\cdot g\cdot X \cdot cos(53)+m_{2}\cdot g\cdot 3.75 \cdot cos(53)=F_{force}7.5sin(53)$

Solving this equation for X, we have:

$X = \frac{377.68\cdot 7.5\cdot sin(53)-21\cdot 9.81\cdot 3.75 \cdot cos(53)}{56\cdot 9.81\cdot cos(53)}$

Finally, X = 5.44 m

Hope it helps!

3 0

3 years ago

Two vertical springs have identical spring constants, but one has a ball of mass m hanging from it and the other has a ball of m

OverLord2011 [107]

To solve this problem we will start from the definition of energy of a spring mass system based on the simple harmonic movement. Using the relationship of equality and balance between both systems we will find the relationship of the amplitudes in terms of angular velocities. Using the equivalent expressions of angular velocity we will find the final ratio. This is,

The energy of the system having mass m is,

$E_m = \frac{1}{2} m\omega_1^2A_1^2$