A cart is initially at rest on a smooth, horizontal track. A student applies a horizontal force to the cart. The force of the student on the cart as a function of time is shown in the graph above. How does the speed of the cart change during the $$\(3 \mathrm{~s}\)$$ time interval shown?
A.
The speed increases, and then decreases while the cart continues in the same direction.
B.
The speed increases, and then decreases while the cart reverses direction.
C.
The speed increases throughout.
D.
The speed decreases throughout.
Exam No：AP Physics 1 Problem Set 1 Year：2024 Question No：APPhysics12024AP0174
Answer:
A
Knowledge points:
2.6 Newton’s Second Law
2.7 Applications of Newton’s Second Law
Solution:
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