In Order to Fire a Projectile Upward and Have It

question 20

Multiple Choice

In order to fire a projectile upward and have it escape the Earth's gravity,

• A)the kinetic energy of the projectile may have any positive value.
• B)the potential energy of the projectile must be positive
• C)the total energy (kinetic plus potential)of the projectile must be negative
• D)the total energy (kinetic plus potential)of the projectile must not be negative
• E)the total energy (kinetic plus potential)of the projectile must be exactly zero

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