Newton's 1st Law of Motion
An object at rest, stays at ______________ and an object in motion stays in __________________
rest, motion
Will a more massive object accelerate more or less than a less massive object?
Less
For every action, there is an _________________ and _________________reaction
equal and opposite
Formula for speed
distance/time
True or False: Any force will change an object's motion.
False
Will an object accelerate more or less with a greater force?
More
When a mosquito and a car collide, what are the forces like in the collision?
equal strength and opposite direction
Formula for velocity
distance/time and direction
An object will only change it's motion if it acted upon by ___________________ ____________________
unbalanced force
A 50 kg box requires how much force to accelerate 5 meters per second squared?
250 N
If a person bumps into a table with a force of 10 N, what is the force of the table on the person?
10 N
Formula for mass
Force/acceleration
If there is a ball on the back seat of a car and the car is moving at 45 mph going straight, what will happen to the ball if the car turns left?
The ball will continue moving straight (which appears to go to the right).
A force of 100 N accelerates a box 4 meters per second squared. What is the mass of the box?
25 kg
If a car crashes into a semi truck, which object will receive a greater force?
Neither; they will receive equal forces.
Formula for force
Mass * Acceleration
What is inertia?
An object's resistance to change: If an object is moving it wants to continue to move, if it's at rest it wants to stay rest. More massive objects have more inertia.
A 6 kg box is pushed with a force of 30 N going to the right. What is the acceleration of the box?
5 meters per second squared
If a car crashes into a semi truck, which object will have a greater change in motion?
Car
Formula for acceleration
Force/mass