What do these 8th grade forces and motion worksheets cover?

10 printable 8th grade forces and motion worksheets in 3 skill sets, in the order they appear on this page: newton's laws; speed and motion; and momentum and collisions.

How do you find net force from a speed and time graph?

Find the slope of each section, which is the acceleration, then multiply by the mass with F = m × a. On Find Net Force From a Speed Time Graph, a 90 kg scooter and rider speed up, cruise and brake. The flat cruising section has zero acceleration, so the net force there is zero.

What is momentum and when is it conserved?

Momentum is mass times velocity, measured in kg·m/s. When objects collide or push apart and no outside force acts, the total momentum before equals the total after. The bumper car and astronaut sheets use this rule to find unknown velocities.

Why do helmets and bent knees lower the force of an impact?

The change in momentum is fixed, but average force equals change in momentum divided by stopping time. Helmet foam and bent knees make the stop take longer, so the force is smaller. Bike Helmet Foam and Collision Force compares no foam with three foam pads.

8th Grade Forces and Motion Worksheets

Ages 13-14 · 3 sub-topics · Free previews · Print-ready PDFs

Forces and motion is the study of how pushes and pulls change the speed and direction of moving objects. There are 10 worksheets for 8th grade, each with an answer key, on Newton's laws, speed and acceleration, and momentum in collisions. Newton's First Law on an Elevator Ride, Momentum in Bumper Car Collisions and Bike Helmet Foam and Collision Force are three of the sheets. Native sheets here practice MS-PS2-1 and MS-PS2-2.

Written by Adi Ackerman, Head Teacher

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Grade: 8th Grade

Subject: Science

Topic: Forces and Motion

Type

Grade8th Grade

TopicForces and Motion

Frequently Asked Questions

An object keeps the same speed and direction unless an unbalanced force acts on it. Newton's First Law on an Elevator Ride shows this with a scale: at rest and at a steady speed the scale reads 490 N, because the forces are balanced. Only while the elevator speeds up or slows down does the reading change.

More science worksheets

Explore all of our 8th grade science worksheets, covering matter, waves and light, living things, energy, and more.

Matter Waves and Light Living Things Energy Earth Systems Ecosystems Earth Science Earth and Space Engineering and Design Scientific Method

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