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A rock with a mass of 2.40 kg is moving with velocity (6.60 i^ − 2.40 j^)m/s. (HINT: v2 = v→⋅v→. ) (a) What is the rock's kinetic energy (in J) at this velocity? J (b) Find the net work (in J) on the rock if its velocity changes to (8.00 i^+4.00 j^)m/s. J

A rock with a mass of 2.40 kg is moving with velocity (6.60 i^ − 2.40 j^)m/s. (HINT: v2 = v→⋅v→. ) (a) What is the rock's kinetic energy (in J) at this velocity? J (b) Find the net work (in J) on the rock if its velocity changes to (8.00 i^+4.00 j^)m/s. J

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A rock with a mass of 2.40 k g is moving with velocity ( 6.60 i ^ − 2.40 j ^ ) m / s . (HINT: v 2 = v → ⋅ v → .) (a) What is the rock's kinetic energy (in J) at this velocity? ◻ J (b) Find the net work (in J) on the rock if its velocity changes to ( 8.00 i ^ + 4.00 j ^ ) m / s . ◻ J

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