Question

3.3.2 test (cst): forces
question 6 of 20
which example illustrates newtons second law?
a. a person pushes a wheelbarrow, causing it to move forward.
b. more mass is added to a wheelbarrow, and a larger force is required to move it.
c. a wheelbarrow remains stationary when no one pushes on it.
d. the force of a wheelbarrow on the ground is equal to the force of the ground on the wheelbarrow.

Explanation:

Newton's second law is \(F = ma\) (force equals mass times acceleration). Option B shows that when mass (\(m\)) increases, force (\(F\)) must increase (assuming acceleration \(a\) is constant, like starting to move from rest). Option A is just a force causing motion (not specifically highlighting \(F = ma\) relationship). Option C is Newton's first law (object at rest stays at rest without force). Option D is Newton's third law (action - reaction forces).

Answer:

B. More mass is added to a wheelbarrow, and a larger force is required to move it.