Work
This is the equation you use to calculate work.
Work = Force*distance*cos(theta)? Or what is the force multiplied by the distance in the direction of the force?
If the velocity of a moving car is doubled, this will happen to its kinetic energy.
What is it will be quadrupled?
This is the standard unit of power.
What is Watts?
This law states that momentum can neither be created nor destroyed.
What is Conservation of Momentum?
Momentum's relationship to force.
What is change in momentum is equal to force times time?
Joules are the units for work. Joules are also the units for another concept.
What is energy?
This is a type of energy that is dependent upon position.
What is potential energy?
A net force of 6.00 N is used to move a box 5.00 m in 2.00 s. This much power is used.
What is 15.0 W?
The magnitude of the momentum of a football player with a mass of 140 kg and a velocity of 5.0 m/s.
What is 700 kg*m/s?
The definition of impulse.
What is either a force applied over a period of time or a change in momentum?
In Hooke's Law, the spring constant (k) indicates this about a spring.
What is the spring's stiffness?
An apple has 0.800 J of gravitational potential energy when hanging from a tree. If it falls off the branch, it has this much gravitational potential energy when it's fallen half way to the ground.
What is 0.400 J?
A worker exerts 45 W of power while lifting a 10.0 N box to a height of 1.0 m. It takes this much time.
What is 4.5 seconds?
Colliding objects that stick together is an example of this type of collision.
What is perfectly inelastic?
Of these two options, this will produce a greater change in velocity: doubling the force or doubling the time the force is applied.
What is "they will produce the same change in velocity?"
A net force of 5.00 newtons is used to displace a 3.00 kg box a distance of 4.00 m in 2.00 seconds. This much work is done on the box.
What is 20 J?
A glass has 0.500 J of gravitational potential energy when sitting on a shelf with a height of 0.400 m. This is the mass of the glass.
What is 0.127 kg?
The label on my electric space heater says 1500 watts. This means it can convert 1500 joules of electrical energy into thermal energy every second. It can therefore add this many joules of energy to a room in an hour.
What is 5,400,000J?
Two skaters with masses of 55.0 kg and 85.0 kg, respectively, face each other on the ice. They are initially at rest, but they push off each other in such a way that they move away from each other in opposite directions. The speed of the lighter skater after they push off is 3.50 m/s. This is the speed of the 85.0 kg skater.
What is 2.26 m/s?
A tennis player exerts a force of 35 N for a period of 0.15 s on a tennis ball with a mass of 0.10 kg. This is the change in velocity of the tennis ball.
The definition of a conservative system.
What is "a system that doesn't lose energy through work"?
If a car moving 50 km/hr skids 15 meters with locked brakes, then a car moving at 150 km/hr will skid skid this far with locked breaks.
What is 135 m?
An escalator is used to move 20 passengers every minute from the first floor of a department store to the second. The second floor is located 5.20 meters above the first floor. The average passenger's mass is 54.9 kg. To move this number of passengers in this amount of time, this is the power requirement of the escalator.
What is 933 W?
In this kind of collision, kinetic energy is neither created nor destroyed.
What is elastic collisions?
The Tesla Model S car has a mass of 2,250 kg. It has one of the fastest 0 to 60 miles/hour accelerations at 2.8 seconds. This is the force produced by the car.
What is 21,536N?