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olga55 [171]
2 years ago
7

Is anyone good with vectors?????

Physics
1 answer:
andriy [413]2 years ago
5 0
I don't understand what you put
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2 objects have a total momentum of 400kg m/s, they collide. Object A’s mass is5kg & object B’s mass is 11kg. After the colli
ss7ja [257]

Answer:

Explanation:

We shall apply law of conservation of momentum .

Momentum before collision = momentum after collision .

Momentum before collision = 400 kg m/s

Momentum after collision = 5  x v + 11 x 15

where v is velocity of A after the collision .

5  x v + 11 x 15 = 400

5 v = 400 - 165

5v = 235

v = 47 m /s .

3 0
3 years ago
A soccer ball initially at rest rolls down a hill with an acceleration of 3.0 m /s2 .it accelerates for 5 seconds before melissa
slavikrds [6]
The correct answer is the Soccer ball is 3.2 plus 5 that’s your answer.
6 0
2 years ago
You throw a baseball directly upward at time ????=0 at an initial speed of 14.9 m/s. What is the maximum height the ball reaches
xeze [42]

Answer:

Maximum height, h = 11.32 meters

Explanation:

It is given that,

The baseball is thrown directly upward at time, t = 0

Initial speed of the baseball, u = 14.9 m/s

Ignoring the resistance in this case and using a = g = 9.8 m/s²

We have to find the maximum height the ball reaches above where it leaves your hand. Let the maximum height is h. Using third equation of motion as :

v^2-u^2=2ah

At maximum height, v = 0

and a = -g = -9.8 m/s²

h=\dfrac{v^2-u^2}{2a}

h=\dfrac{0-(14.9\ m/s)^2}{2\times -9.8\ m/s^2}

h = 11.32 meters

Hence, the maximum height of the baseball is 11.32 meters.

8 0
3 years ago
6A certain load and set of slings create a 20-degree angle between the load and each sling leg. Using a spreader for the same li
Otrada [13]

Solution:

The angle between the sling and the load is 20^{\circ}

So the  tension in each sling can be calculated as

Sin \theta = Mg => T = \frac{Mg}{2Sin\theta}

Sin \theta=> \frac{Mg}{2Sin 20^{\circ}}

Where    

M is the mass of the load

The Horizontal reaction on the sling will be inward.

After using the spreader, the new angle between sling and load is 60^{\circ}, the tension in the sling will be  

T= \frac{Mg}{2 Sin 60^{\circ}} = \frac{Mg}{2 Sin 20^{\circ}}

The tension will be same as before in the sling move away through the spreader at an angle more than 90 degree the horizontal force will act opposite and will be outward

5 0
3 years ago
On which planet would your weight be the most and the least?
viktelen [127]

Answer: on jupiter you would weigh the most  and on mars you would weigh the least

Explanation:

7 0
2 years ago
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