The roller at $A$ is moving upward with a velocity of $v_A=4f\frac{t}{s}$ and has an

acceleration of $a_A=2f\frac{t}{s^2}.($Figure $1)$

Figure

$1$ of $1$

Part A

Determine the velocity of block $B$ when $s_A=4ft.$

Express your answer to three significant figures and include the appropriate units.

$v_B=$

$\frac{ft}{s^2}$

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Enter your answer using units of US customary velocity.

Part B

Determine the acceleration of block $B$ when $s_A=4ft.$

Express your answer to three significant figures and include the appropriate units.

$a_B=$

Use US customary units for your answer.

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