What is the kinetic energy of a bicycle with a mass of 14kg traveling at a velocity of 3m/s?
What is 63 J
100
An inclined plane wrapped around a cylindrical post is a
What is screw
100
The _____ energy of an object increases with its height
What is gravitational potential
100
The relationship among mass, force, and acceleration is explained by which of Newton's Laws
What is 2nd
100
Automobile seat belts are necessary for safety because of a passenger's ________
What is inertia
200
How much force is needed to move a 189kg man with an acceleration of 15m/s2?
What is 2835 N
200
When two or more simple machines work together, they are called
What is a compound machine
200
The SI unit for energy is the
What is Joules (J)
200
When a bowling ball hits a bowling pin that is standing still, the pin will accelerate in the direction that the bowling ball is rolling is an example of which of Newton's Laws
What is 1st
200
The amount by which a machine multiplies an effort force is called the
What is mechanical advantage
300
What is the potential energy of a 10.2 kg rock that is sitting on top of a hill that is 300 meters high?
What is 29988 J
300
An inclined plane with one or two sloping sides forms a machine called a
What is wedge
300
Increasing the speed of an object __________ its potential energy
What is does not affect
300
When a teacher is standing at the front of the class, the force of gravity is pulling her down towards the ground. The ground is pushing back with an equal and opposite force. This is an example of which of Newton's Laws
What is 3rd
300
For an object, the greater the force that's applied to it, the greater its ________ will be
What is acceleration
400
A 3000N force acts on a 200kg object. The acceleration of the object is
What is 15m/s2
400
Name the six simple machines
What is Inclined Plane, Lever, Pulley, Screw, Wedge and Wheel and Axle
400
The kinetic energy of an object increases as its ________ increases
What is speed (velocity)
400
If a ball is thrown in outer space where there is no air resistance or gravity, it will continue to travel forever without stopping because there is no force acting to change its velocity is example of which of Newton's Laws
What is 1st
400
The rate at which work is done is called _________
What is power
500
A car hits a pole with a force of 114N and the pole moves a distance of 9m. What work was done on the pole?
What is 1026 J
500
What three simple machines are basically the same
What is Inclined Plane, Screw, and Wedge
500
What are the formulas for kinetic and potential energy
What is KE=1/2mv2 and PE=mgh
500
Inertia is the tendency of an object to continue its current motion. Describe the relationship between inertia and mass
What is the greater the mass of an object, the greater inertia it has
500
The amount of gravitational force between objects depends on what two things