Show:
Newton's Laws
Solve
Friction
Motion
Forces
100
According to Newton's Law of ____, an object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an outside force.
Inertia
100
It takes Lucy 5 hours to reach her cousin's house, which is 370 miles away. Her average speed is _____.
74 miles per hour
100
____ surfaces produce the most fiction.
Rough
100
____ is a change in an object's position over time and is measured by speed.
Motion
100
Force is a ___ or ___.
Push or Pull
200
The acceleration of an object is ____ proportional to the mass of the object.
Inversely
200
Alex drives 40 miles at an average speed of 50 mph to get to his house from work. How long does he have to drive?
0.8 hours
200
More speed encounters ____ friction.
More
200
A ___ is a place or object used for comparison to determine if something is in motion.
Reference Point
200
____ are equal forces acting on one object in opposite directions.
Balanced Forces
300
Newton's 2nd law is the law of ______.
Acceleration
300
Jane and Mary are going to a restaurant together. Jane has to go 40 miles to get there and is going at an average speed of 55 mph. Mary has to go 50 miles to get there and is going at an average speed of 60 mph. If they leave at the same time, which of them will get there first, and by how much time? (Round to the nearest tenth)
Mary by 0.1 hours
300
Friction goes in the _____ direction of motion.
Opposite
300
___ is the speed of an object in a given direction.
Velocity
300
An objects velocity is affected by _____.
Unbalanced forces
400
The Formula for Force is ____.
F=ma
400
Tyrone wants to go to the store, which is 3.5 miles away. He can bike there at an average speed of 20 mph. How long will it take to get there?
0.175 hours
400
Friction is a force that occurs when surfaces ___________.
Slip or slide over one another
400
___ is the change in speed and/or direction of an object between 2 points in time.
Acceleration
400
___ is produced when a force is applied with leverage.
Torque
500
Newton's third law states that ____.
For every action there is an equal and opposite reaction.
500
A watermelon hit a car and its force was 80N. It was accelerating at a rate of 5m/s/s. What is the combined mass in kg of the thrower?
16 kg
500
Friction occurs in ___, ___, and ___.
Solids, Gasses, Liquids
500
Motion occurs when ____ are _____.
Forces, Unbalanced
500
____is a force that pulls objects toward each other.
Gravity