1st Law
What is Newton's 1st Law?
An object at rest stays at rest, and object in motion stays at a constant speed and in a straight line unless acted upon by unbalanced forces
What is Newton's 2nd Law?
Force equals mass times acceleration
What is Newton's 3rd law?
Every action has an equal and opposite reaction
If a car brakes suddenly, and the passenger is not wearing a seatbelt, what will happen to them?
They will continue moving forward until they hit something.
If a baseball player hits a ball with 30 N of force, how much force does the ball do onto the bat?
30 N
An object with 2 kg of mass is moving at velocity v on ice. At time t ice ends, and the object moves onto a surface with a friction coefficient of 0.1. A boy watching also starts pressing the object with 1.96 N of force forwards at time t. What happens to the velocity after t.
It stays the same
An object with mass m is being pushed by a net force of F and accelerating at a. What is the acceleration if the force stays the same but the mass is halved.
2a
Jeff is bored, so he makes a cannon. This cannon launches a cannonball with a mass of 30 kg at 10 m/s2. If the cannon has a mass of 300 kg, what was the cannon's acceleration.
-1 m/s2