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Unit review: forces and motion — Homework
Mixed review: use the correct formula or law from this unit for each problem.
- 1.A 3 kg cart accelerates at 4 m/s^2. Find the force.
- 2.A 2000 kg car moves at 15 m/s. Find its momentum.
- 3.A skater speeds up from 3 m/s to 9 m/s in 3 s. Find the acceleration.
- 4.A book sits still on a table. Name the law that explains why, using balanced/unbalanced forces.
- 5.Why does a heavier backpack make it harder to speed up your walking pace, using F = m x a?
- 6.Pick one demonstration or design from this unit and explain it completely: what happens, and which law or formula applies.
🌲 Homeschool of the FutureEighth Grade · Science · week 9 homework