Forces
The statement by Newton that for every action there is an equal but opposite reaction explains the _______ of law of motion?
What is the Third?
The energy form associated with an object in motion.
What is kinetic energy?
If an object has a mass of 35kg what would its weight be?
343 Newtons
Temperature is the measure of what?
Average kinetic energy in an object
A newton is equivalent to _______ (units)
What is kg·m/s^2?
1 Newton displaced by 1 meter
______ is the energy form that is associated with an object due to its position
What is potential energy?
For work to be done the object has to do what?
move from its original position
Heat always travels in what direction, never in the reverse?
from warmer objects to cooler objects
A hammer drives a nail into a piece of wood. Identify an action-reaction pair in this situation.
What is the hammer exerts a force on the nail; the nail exerts a force on the hammer?
______ is the kinetic energy of a 0.135 kg baseball thrown at 40.0 m/s.
What is 108 J?
A 15N box is pushed 20meters. What work was done
300 Joules
What is the difference between conduction and convection?
A person is pulling a cart to the east with 50N of force and his friend is pulling to the west with 75N of force. What is the resultant force in what direction?
25N to the West
A construction worker pushes a wheelbarrow 5.0 m with a horizontal force of 50.0 N. The amount work done by the worker on the wheelbarrow is _____.
What is 250 J
How can I increase the kinetic energy of an object? There are 2 ways.
Increase the mass or the velocity
45000J were created in 60 seconds. What was the power output?
750 Watts
How is radiation different than convection and conduction?
Radiation travels in waves
An electric vehicle has a power rating of 333,100 W. If the car does 1,665,500 J of work how much time does that take?
5 seconds
________ is the formula that would be used to directly calculate the kinetic energy of an object with mass bouncing up and down on a spring with spring constant.
What is KE=1/2 x mass x velocity?
The law of conservation of energy states
Energy cannot be created or destroyed it just changes form.