Question

A hockey puck slides with a constant velocity across a frictionless ice surface. In one paragraph, using your own words, describe the net force on the hockey puck and the observation which allowed you to draw that conclusion.

Answer 1

Answer:

The net force on the hockey puck is zero because it's acceleration is zero due to constant velocity.

The hockey will remain in it's uniform motion unless compelled by an external force.

Explanation:

$from \: vector \: mechanics \\ a = \frac{dv}{dt} \\ but \: at \: constant \: velocity \\ \frac{dv}{dt} = 0 \\ hence : \: \: a = \frac{0}{dt} \\ a = 0$