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Having problems staying loged in or re you experemenng issues? Please vish our trouble Identify whether the bold-faced object described below possesses kinetic energy, gravitational potential energy, both forms of energy, or neither form of energy. A cliff diver is at rest at the top of a tall cliff, making final preparations for his jump to the waters below. Kinetic Energy Both of These

Ask by Bryant Brooks. in the United States
Mar 09,2025

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Answer

The diver has gravitational potential energy but no kinetic energy.

Solution

**Step 1: Analyze the given situation** The cliff diver is at rest at the top of a tall cliff. When an object is at rest, its speed \( v = 0 \). **Step 2: Determine the kinetic energy** The kinetic energy (\( KE \)) of an object is given by the formula: \[ KE = \frac{1}{2}mv^2 \] Since \( v = 0 \), \[ KE = \frac{1}{2}m(0)^2 = 0 \] Thus, the diver has no kinetic energy. **Step 3: Determine the gravitational potential energy** The gravitational potential energy (\( GPE \)) is given by: \[ GPE = mgh \] where: - \( m \) is the mass of the diver, - \( g \) is the acceleration due to gravity, - \( h \) is the height above a reference point (in this case, the water below). Since the diver is at the top of a tall cliff, \( h \) is significant. Therefore, the diver possesses gravitational potential energy. **Conclusion** The diver has gravitational potential energy but no kinetic energy. Thus, the correct answer is that the diver possesses **gravitational potential energy**.

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The Deep Dive

While the cliff diver is at rest at the top of the tall cliff, he possesses gravitational potential energy due to his elevated position above the water. This potential energy has the potential to be converted into kinetic energy once he jumps and starts to fall toward the water below. However, since he is not moving, he does not have kinetic energy at that moment. So he has gravitational potential energy only! In practical terms, understanding the difference between these two types of energy can help in various fields, such as engineering and sports science. For example, when designing a diving platform or training athletes, knowing how potential energy can be transformed into kinetic energy can help optimize performance and safety measures for divers and athletes engaging in similar activities.

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