A car traveling at 60 mph has how much more energy than a car going at 15 mph?

Physics

1 answer:

Liono4ka [1.6K]3 years ago

6 0

4. KE increases by a factor of 16 is the answer

Explanation:

Kinetic energy = (1/2)mv² = 0.5 mv²

where

m = mass, and v = velocity.

So at 15 mph,

K E = 0.5 m (15) ² = 112.5 m

And at 60 mph,

K E = 0.5 m (60)² = 1800 m

m is the mass, and not meters.

So, 1800 m/112. 5 m = 16

16 times the Kinetic Energy.

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An object ends up at a final position of x=-55.25 meters after a displacement of -189.34 meters after a displacement of -189.34

Travka [436]

The initial position of the object was found to be 134.09 m.

Explanation:

As displacement is the measure of difference between the final and initial points. In other words, we can say that displacement can be termed as the change in the position of the object irrespective of the path followed by the object to change the path. So

Displacement = Final position - Initial position.

As the final position is stated as -55.25 meters and the displacement is also stated as -189.34 meters. So the initial position will be

Initial position of the object = Final position-Displacement

Initial position = -55.25 m - (-189.34 m) = -55.25 m + 189.34 m = 134.09 m.

Thus, the initial position for the object having a displacement of -189.34 m is determined as 134.09 m.

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blondinia [14]

Answer:

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Explanation: