PH-1472

Resultant force and F = ma

Physics · Secondary 4 · Hard · Resultant force and F = ma

A 0.40 kg ball is thrown horizontally and experiences a constant air resistance of 1.2 N opposite to its motion. The horizontal acceleration of the ball is

2.0\,\text{m/s}^2

in the direction of motion.

What is the horizontal driving force on the ball?

$0.40\,\text{N}$
$0.80\,\text{N}$
$2.0\,\text{N}$
$3.2\,\text{N}$

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