Question

When the speed of your car is doubled, by what factor does its kinetic energy increase?

(a) \(\sqrt 2 \). (b) 2. (c) 4. (d) 8.

Accepted Answer

The correct answer is option (C).

When the speed of the car is doubled, the kinetic energy increases by a factor of 4.

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Physics Principles with Applications

Answers without the blur.

Short Answer

When the speed of your car is doubled, by what factor does its kinetic energy increase?

Step by Step Solution

Step 1: Characteristics of kinetic energy

Step 2: Increase in kinetic energy of the car

Most popular questions for Physics Textbooks

^{(I) Calculate the forces \({F_{\rm{A}}}\) and \({F_{\rm{B}}}\) that the supports exert on the diving board of Fig. 9–49 when a 52-kg person stands at its tip. (a) Ignore the weight of the board. (b) Take into account the board’s mass of 28 kg. Assume the board’s CG is at its center.}

^{Question: (II) A woman holds a 2.0 m long uniform 10.0 kg pole, as shown in Fig. 9–78. (a) Determine the forces she must exert with each hand (magnitude and direction). To what position should she move her left hand so that neither hand has to exert a force greater than (b) 150 N? (c) 85 N?}

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Recommended explanations on Physics Textbooks

Select your language

Physics Principles with Applications

Answers without the blur.

Short Answer

When the speed of your car is doubled, by what factor does its kinetic energy increase?

Step by Step Solution

Step 1: Characteristics of kinetic energy

Step 2: Increase in kinetic energy of the car

Most popular questions for Physics Textbooks

(I) Calculate the forces \({F_{\rm{A}}}\) and \({F_{\rm{B}}}\) that the supports exert on the diving board of Fig. 9–49 when a 52-kg person stands at its tip. (a) Ignore the weight of the board. (b) Take into account the board’s mass of 28 kg. Assume the board’s CG is at its center.

Question: (II) A woman holds a 2.0 m long uniform 10.0 kg pole, as shown in Fig. 9–78. (a) Determine the forces she must exert with each hand (magnitude and direction). To what position should she move her left hand so that neither hand has to exert a force greater than (b) 150 N? (c) 85 N?

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^{(I) Calculate the forces \({F_{\rm{A}}}\) and \({F_{\rm{B}}}\) that the supports exert on the diving board of Fig. 9–49 when a 52-kg person stands at its tip. (a) Ignore the weight of the board. (b) Take into account the board’s mass of 28 kg. Assume the board’s CG is at its center.}

^{Question: (II) A woman holds a 2.0 m long uniform 10.0 kg pole, as shown in Fig. 9–78. (a) Determine the forces she must exert with each hand (magnitude and direction). To what position should she move her left hand so that neither hand has to exert a force greater than (b) 150 N? (c) 85 N?}