Dynamics
Cart
Photogate #1 Photogate #2
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Track
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16. Photogate # 1 measures a 0.02-second elapsed time for the cart's vertical
rod (diameter = 1.2 cm) to block the infrared beam and then unblock
the same beam. Photogate # 2 works in the same manner and measures a
0.06-second elapsed time for the rod to pass through the beam. Based on
this data, describe the motion of the cart and calculate the magnitude of its
acceleration.
(A) Speeding up with |a| = 0.5 m/s/s
(B) Slowing down with |a| = 0.5 m/s/s
(C) Speeding up with [a] = 0.8 m/s/s
(D) Slowing down with |a| = 0.8 m/s/s