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Answer :
Final answer:
The velocity of the vehicle at that instant, calculated by rearranging the kinetic energy formula and plugging in the given values, is 6.32 m/s.
Explanation:
The kinetic energy (KE) of an object can be found using the formula: KE = 1/2 mv^2, where m is the mass and v is velocity.
To find the velocity, we can rearrange this formula to get: v = sqrt((2 * KE) / m). Substituting the given values in the formula, we get: v = sqrt((2 * 20000 J) / 1000 kg) = sqrt(40 m^2/s^2) = 6.32 m/s.
Therefore, the vehicle's velocity at that instant is 6.32 m/s.
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