# Motion in a Plane8.1 Dynamics in Two Dimensions1. An ice hockey puck is pushed across frictionless ice in the direction shown. The puck receives a sharp,very short-duration kick toward the right as it crosses line 2. It receives a second kick, of equal strengthand duration but toward the left, as it crosses line 3. Sketch the puck's trajectory from line 1 until itcrosses line 4.4-3-2 --1 -Bird's-eye viewof hockey puckJ11I11 of hockey puck2. A rocket motor is taped to an ice hockey puck, oriented so that the thrust is to the left. The puck isgiven a push across frictionless ice in the direction shown. The rocket will be turned on by remotecontrol as the puck crosses line 2, then turned off as it crosses line 3. Sketch the puck's trajectory fromline 1 until it crosses line 4.4-3- _2-1-Bird's-eye viewof hockey puckO 2017 Pearson Education.

Question
Asked Oct 15, 2019
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Step 1

Let initial force be F, force at line 2 be F’ and  line 3 be -F’.

Step 2

At line 1, the force is initial i.e. F

At line 2, the force is resultant force R shown in sliver line because of the forces F and F’ acting on the puck.

Step 3

At line 3, the -F’ force cancels the F’ which results in the initial fo...

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