Force
Three fundamental laws of motion describe how objects move and interact with forces. Enumerate them.
What is the Law of Inertia?
What is the Law of Acceleration?
What is the law of Action-reaction?
The unit of Momentum
What is kg.m/s?
Work is done when this is applied to an object.
What is force?
Power is the rate at which this is done.
What is Work?
the ability to do work.
What is energy?
It is the push and pull.
What is Force?
Mass times velocity
What is momentum?
The formula used to calculate work.
What is W=Fdcos theta?
What is W=Fd?
This is the unit often used for engines.
What is horsepower?
Energy due to motion.
What is kinetic energy?
When you push against the wall, the wall pushes back. This demonstrates?
What is Newton's Third Law of Motion? Or what is Action-Reaction?
A collision where objects bounce off each other and kinetic energy is conserved.
What is an elastic collision?
The unit of power in the SI system.
What is watt?
The work required to lift a crate is 310 J. If the crate is lifted in 25.0 s, this power is developed.
What is 12.4 Watts
Using a lever to lift a heavy object reduces the force needed, demonstrating efficient use of…
What is WORK AND ENERGY?
The formula that relates force, mass, and acceleration.
What is F=ma?
A car crashes into a wall and crumples, increasing the time of collision. This reduces the force experienced. This is an application of…
What is an impulse?
This is the amount of work done by a worker lifting 225 N of bricks to a height of 1.75 m
What is 393.75 or 394 J?
Climbing stairs slowly requires less of this than running up quickly.
What is power?
The total energy of an isolated system remains constant according to this principle.
This force is necessary to produce an acceleration of 6.00 m/s2 on a mass of 5.00 kg.
What is 30.0 N
A collision where objects stick together and kinetic energy is not conserved.
What is inelastic?
When a force is perpendicular to the displacement, such as carrying a bag horizontally, the work done by the force is…
What is zero?
A motor is capable of developing 10.0 kW of power. How large a mass can it lift 75.0 m in 20.0 s?
What is 272 kg?
A roller coaster of mass 500 kg is at the top of a 20 m hill. Calculate its potential energy relative to the bottom.
What is 98,000 J?