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Initially, a particle is moving at 4.90 m/s at an angle of 35.0 ∘ above the...

Initially, a particle is moving at 4.90 m/s at an angle of 35.0 ∘ above the horizontal. Two seconds later, its velocity is 6.30 m/s at an angle of 56.0 ∘ below the horizontal.

What was the particle's average acceleration during these 2.00 seconds?

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