The table lists the x-component of a cart’s momentum at three instants

PHYSICS · Subjective · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

The table lists the x-component of a cart’s momentum at three instants.

t\, (\text{s})

1.7\quad 2.1\quad 2.5

p_x\, (\text{kg}\,\text{m/s})

2.9\quad 3.7\quad 4.6

Using these data, estimate the instantaneous net external force acting on the cart at

t = 2.1\,\text{s}

. State the magnitude and indicate whether the force points in the

+x

-x

direction.