Question

Billy pushes a supermarket cart with a constant force
F
. Every time he adds groceries to the cart, the weight of the cart increases. Billy adds groceries until the cart is full.



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Which claim supports the relationship between the cart’s mass and acceleration when Billy uses the same force?



A.
The increased weight increases the acceleration.

B.
The increased weight decreases the acceleration.

C.
The increased weight causes no change in the acceleration.

D.
The increased weight causes the acceleration to become zero.

Answer 1

B. With the same constant push F, Newton’s second law gives a = F/m, so increasing the cart’s mass (weight) reduces its acceleration.