Michigan M-STEP Grade 8 Science Practice Questions - Michigan Student Test Of Educational Progress Grade 8 Science Exam

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A hockey puck slides across smooth ice at the Van Andel Arena in Grand Rapids. After receiving an initial hit, the puck continues gliding across the ice at a constant speed in a straight line. Which law best explains this motion?

Gravitational pull pulling the puck sideways along the ice surface. Air resistance accelerating the puck in its direction of travel. Friction between the puck and ice pushing the puck forward. Inertia, which causes an object in motion to remain at constant velocity unless acted upon by an unbalanced net force.

Correct Answer:

Inertia, which causes an object in motion to remain at constant velocity unless acted upon by an unbalanced net force.

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