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3 years ago

Help please whats an example of kinetic energy

Physics

2 answers:

miss Akunina [59]3 years ago

8 0

Answer:

An airplane has a large amount of kinetic energy in flight due to its large mass and fast velocity.

Explanation:

Otrada [13]3 years ago

6 0

Answer:

A semi-truck travelling down the road has more kinetic energy than a car travelling at the same speed because the truck's mass is much more than the car's. A river flowing at a certain speed comprises kinetic energy as water has certain velocity and mass.

Explanation:

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Displacement is the difference between the initial position and the____ position of an object

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3 years ago

What if water didnt have a negative charge?

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3 years ago

A 0.015 kg marble moving to the right at 0.225 m/s makes an elastic head-on collision with a 0.030 kg shooter marble moving to t

bonufazy [111]

Answer:

0.09 m/s to the right

Explanation:

The principle of conservation of linear momentum states that in a system of colliding objects, the total momentum before collision is equal to the total momentum after collision, provided there is no external force.

The total momentum, in this question, is the sum of the momentum of the the two marbles. We assume velocity to the right is positive while to the left is negative. Thus, total initial momentum is

$P_i = 0.015\times0.225+ 0.030 \times(-0.180) = 0.002025$

After collision, the first marble goes left. Let the velocity of the other marble be v. Then we have

$P_f = 0.015\times(-0.315) + 0.030v = 0.030v - 0.004725$

Equating both momenta,

$P_i = P_f$

$0.002025 = 0.030v - 0.004725$

$v = 0.09 \text{ m/s}$

Hence, the larger goes right with a velocity of 0.09 m/s (since it has a positive sign).

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3 years ago

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