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The velocity v→ of a particle moving in the xy plane is given by v→ = (6.0t − 4.0t2)i^ + 7.1 j^, with v→ in meters per second and t( > 0) is in seconds. (a) What is the acceleration when t = 1.1 s? (Express your answer in vector form.) a→ = m/s2 (b) When (if ever) is the acceleration zero? (Enter 'never' if appropriate.) s (c) When (if ever) is the velocity zero? (Enter 'never' if appropriate.) s (d) When (if ever) does the speed equal 10 m/s ? (Enter 'never' if appropriate.) s

The velocity v→ of a particle moving in the xy plane is given by v→ = (6.0t − 4.0t2)i^ + 7.1 j^, with v→ in meters per second and t( > 0) is in seconds. (a) What is the acceleration when t = 1.1 s? (Express your answer in vector form.) a→ = m/s2 (b) When (if ever) is the acceleration zero? (Enter 'never' if appropriate.) s (c) When (if ever) is the velocity zero? (Enter 'never' if appropriate.) s (d) When (if ever) does the speed equal 10 m/s ? (Enter 'never' if appropriate.) s

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The velocity v → of a particle moving in the xy plane is given by v → = ( 6.0 t − 4.0 t 2 ) i ^ + 7.1 j ^ , with v → in meters per second and t ( > 0 ) is in seconds. (a) What is the acceleration when t = 1.1 s ? (Express your answer in vector form.)
a → = ◻ m / s 2
(b) When (if ever) is the acceleration zero? (Enter 'never' if appropriate.) ◻ s (c) When (if ever) is the velocity zero? (Enter 'never' if appropriate.) ◻ s (d) When (if ever) does the speed equal 10 m / s ? (Enter 'never' if appropriate.) ◻ 5

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