Apool ball is rolling at a velocity of 12 cm/s to the right when it is hit by another ball. it continues moving right at a velocity of 21 cm/s. if the collision lasts 0.45 seconds, what is the ball's acceleration?
a.+9 cm/s2
b.20 cm/s2 to the right
c.26 cm/s2 to the right
d.+46 cm/s2

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

An alligator swims to the left with a constant velocity of 5 \,\dfrac{\text{m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction. when the alligator sees a bird straight ahead, the alligator speeds up with a constant acceleration of 3 \,\dfrac{\text {m}}{\text s^2}3 s 2 m ? 3, space, start fraction, m, divided by, s, start superscript, 2, end superscript, end fraction leftward until it reaches a final velocity of 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction leftward. how many seconds does it take the alligator to speed up from 5 \,\dfrac{\text {m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction to 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction?

Ineed the answer to question 1 , i’m desperate