An object at rest may have a. velocity c. kinetic energy 9) d. potential energy

Question

An object at rest may have a. velocity c. kinetic energy 9) d. potential energy 10) An object that has momentum must also have b. impulse c. kinetic energy d. potential energy Ifa rocket of initial mass m is to rise from its launching pad, its initial thrust must exceed I1) 2 b. mg c. 2mg 2 12) An angle of 20 degrees is equivalent to a. 0.17 radians b. 0.20 radians c. 0.35 radians d. 3.18 radians 13) An object in equilibrium may not have a. any force acting on it b. any torques acting on it c. any velocity d. any acceleration

Explanation / Answer

9. Object which is at rest may have potential energy.

Option (d) is correct.

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10. Momentum of the object implies that some velocity possessed by the object means some kinetic energy must be possessed by the object too.

Object (c) is correct.

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11. Its thrust must be greater than its weight(mg) to lift it up.

Option (b ) is correct.

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12. In degrees= pi* 20/180= 0.35 radians

Option (c) is correct.

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13.option (c) is correct.

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Comment in case any doubt..goodluck

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