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2 years ago

g A ball is thrown against the wall and bounces back with the same velocity. What type of collision is this

Physics

1 answer:

Softa [21]2 years ago

8 0

Answer:

Perfectly elastic collision

Explanation:

In a closed system, an elastic collision is a type of collision between two bodies, where the total momentum and kinetic energy are conserved.

We are told from the problem that the ball bounces back with its original velocity. For the ball to bounce back to the thrower in the first place, this is our first hint that the collision is elastic. If the collision was inelastic, the ball would most likely have stuck to the wall.

In addition to that, the velocity of the ball remains fairly unchanged even after the collision. This confirms that the kinetic energy it had before the collision is the same as the kinetic energy it has after the collision.

As a result of this, the collision is perfectly elastic

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A body moves in a straight line. At time, it's acceleration is given by a = 12t + 1. When t =0, the velocity of the body v is 2

madreJ [45]

Answer:

v = 6t² + t + 2, s = 2t³ + ½ t² + 2t

59 m/s, 64.5 m

Explanation:

a = 12t + 1

v = ∫ a dt

v = 6t² + t + C

At t = 0, v = 2.

2 = 6(0)² + (0) + C

2 = C

Therefore, v = 6t² + t + 2.

s = ∫ v dt

s = 2t³ + ½ t² + 2t + C

At t = 0, s = 0.

0 = 2(0)³ + ½ (0)² + 2(0) + C

0 = C

Therefore, s = 2t³ + ½ t² + 2t.

At t = 3:

v = 6(3)² + (3) + 2 = 59

s = 2(3)³ + ½ (3)² + 2(3) = 64.5

5 0

2 years ago

In the nineteenth century, Gregor Mendel first determined some basic rules of genetics that have been observed throughout all ty

Dmitry_Shevchenko [17]

Hi!

The correct option would be A) Mendel’s genetics states laws that are now part of the theory of biological evolution.

When Darwin proposed the idea of biological evolution, which revolved around the concept that favorable genes are naturally selected into a species to ensure survival, his theory was criticized as during that time there was the idea that individual traits of two parents would present themselves as a blend in the offspring.

Gregor Mendel's theory of inheritance supported Darwin's idea as it dealt with the transmission of traits in generations through entities called genes, which were present in pairs for a particular trait.

Hope this helps!

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3 years ago

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What day of the year is solar time the same as sidereal time?

Illusion [34]

Answer:

I think the answers March 21

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2 years ago

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This is the reduction in the density of a medium

MAXImum [283]

The answer is Rarefaction

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3 years ago

2. 3. 4. 5. 6. 7. A(n)results when a vehicle loses part or all of its grip on the road. is a technique that can be applied when

dexar [7]

Answer:

1) Skid

2) Rocking

3) Oversteer situation

4) Controlled breaking

5) Overdriving headlights

6) Hydroplaning

7) Understeer situation

Explanation:

1) A skid results when a vehicle loses part or all of its grip on the road

2) Rocking is a technique that can be applied when trying to move your vehicle out of deep snow

3) The action of vehicle's rear end sliding out to a side is called an oversteer situation

4) Controlled breaking is a technique of reducing your speed as quick as possible while maintaining control of your vehicle

5) Driving at a speed where the stopping distance of your vehicle is longer than the distance you can see with your headlights is called overdriving headlights

6) Hydroplaning occurs when a tire loses road surface contact and rises on top of water

7) It is an understeer situation when your front tires begin to plow and your vehicle is not responding or not responding as quickly as it should, to a steering point

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2 years ago