Vocabulary
a push or a pull that acts on an object
force
What unit of measurement is named after Isaac Newton?
N, Newton
The harder I kick a football, the further it will go
2nd Law
True or false: You would weigh less on planets with lower gravity than Earth's.
True
An object with a mass of 2.0 kg accelerates 2.0 m/s2 when a force is applied to it. What is the amount of force on the object?
4 N
measure of the amount of matter in an object
mass
What unit is used to measure mass?
kg
When you kick off the ground on a swing, it causes you to swing backwards
3rd Law
True or false: A car driving down the interstate would have more inertia than a jogger on the sidewalk.
True
An object with a mass of 5.5 kg accelerates 8.0 m/s2 when a force is applied to it. What is the amount of force on the object?
44 N
force by which a body draws objects towards its center
gravity
What unit is used to measure force?
N
I'm riding my razor scooter and I hit a rock. This causes me to go flying over the handlebars.
1st Law
True or false: For some actions, there is an equal and opposite reaction.
False (for EVERY action!)
An object accelerates 7.2 m/s2 when a force of 4.0 N is applied to it. What is the mass of the object?
0.56 kg or 0.5555555555555 kg
tendency of an object to resist any change in motion
inertia
What unit is used to measure acceleration?
m/s2
When I turn the ceiling fan off, the blades continue to spin for a short amount of time.
1st Law
True or false: Gravity does not act on all objects
False
An object with a mass of 3.2 kg has a force of 7.9 N applied to it. What is the acceleration of the object?
2.5 m/s2 or 2.46875 m/s2
force that opposes the sliding motion of two surfaces that are touching each other
What is the gravitational strength on planet Earth?
9.8 N/kg
When a boxer uppercuts their opponent's jaw, their jaw exerts an equal force back on the boxer's first.
3rd Law
True or false: The greater an object's mass is, the greater its inertia is.
True (Inertia is how difficult it is to affect the motion of an object. So if something is heavier, it is harder to move!)
An object accelerates 16.3 m/s2 when a force of 4.6 N is applied to it. What is the mass of the object?
0.3 kg or 0.28 kg