https://padlet.com/490633/xg7a4w1x6abq en-us 2017-10-26 17:58:10 UTC 2026-01-24 13:59:38 UTC hello@padlet.com https://padletuploads.blob.core.windows.net/prod/144511659/ba35e32bfc550b9b61192114039ec7ad/newton_idea_law_gravity_apple_tree_amazing_opening_cartoon_illustration_59046965.jpg 490633 https://padlet.com/490633/xg7a4w1x6abq/wish/200964306

Law of inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Example problem: An African elephant can reach heights of 13 feet and possess a mass of as much as 6000 kg. Determine the weight of an African elephant in Newtons and in pounds. (Given: 1.00 N = .225 pounds)

Real world example... hitting a brick wall with a motorcycle.

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acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. F = m • a

Example problem: A 15 kg object moving to the west with an acceleration of 10m/s². What is the net force acting on an object?

Real world example... Pushing a car with the shift on break.

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For every action, there is an equal and opposite reaction.

Example problem: Two boats  A and B connected with a string, are floating on a calm lake. The mass of A and B are 100 kg and 150 kg respectively, and the distance between them is 30 m. If the string is pulled from boat A with a constant force and the two boats meet in 20 seconds  what is the distance boat A moves?

Real world example...when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air

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