Work, work, work
What is Joule?
In a race, two cars have the same mass but different velocities. The car with the slower velocity has ______ kinetic energy than the other car does.
What is less?
An electric blanket transfers energy from this to this.
What is electrical to thermal?
The amount of work done in a certain time is this.
What is power?
Energy in motion is known as this.
What is kinetic energy?
You move a cart of pumpkins 15 m. This requires a force of 65 N. This is how much work was done while moving the pumpkin.
What is 975 J?
This is how much energy a 4 kg apple has that is thrown at a speed of 2 m/s.
What is 8J?
A windmill transfers energy from this to this.
What is kinetic to electrical?
This is how much power is used if a 100 J of work is done to move a box in 10 s.
What is 10 watts?
A 0.9 kg pineapple falls from a tree that is 5.8 m tall. This is how much gravitational potential energy it has.
What is 51.2 J?
These are the two conditions that must be met in order for work to be done.
What is
1. The object must move
2. Force must be applied in the direction of the motion
?
List the type of potential energy each object below has.
A.Sandwich
B.Trampoline
A: Chemical potential energy
B: Elastic Potential Energy?
A firework transfers energy from this to this.
What is chemical to radiant/thermal/sound?
This is how long would it take to do 36 J of work if 4 W of power is available.
What is 9 seconds?
This is how much heat is needed to warm 0.098 kg of gold from 15°C to 30°C if gold has a specific heat of 136 J/kg°C.
What is 200J?
A small child weighs 25 N. If they do a somersault and move a distance of 3 m, this is how much work was done.
What is 75 J?
This is how much potential energy a bird has that has a mass 9 kg and is sitting on a branch 3 m high.
What is 264.6 J?
An apple falling from a tree transfers energy from this to this.
What is GPE to kinetic?
This is how much power is used if a force of 70 N is used to push a box a distance of 20 m in 5 s.
What is 280 watts?
These are the definitions of thermal energy and mechanical energy.
What is
Thermal energy = the sum of kinetic and potential energy of particles in an object
Mechanical energy = the sum of kinetic and potential energy in a system?
This is how far you pushed a 12 kg barrel of tools if you did 276 J of work and pushed at a rate of 3 m/s2.
What is 7.67 m?
This is the mass of a picture that falls off a shelf 6 m high and has 150 J of energy.
What is 2.55 kg?
A man eating dinner, then tap dancing transfers energy from this to this.
What is Chemical to kinetic to sound/thermal?
A motorcycle and its rider have a mass of 28 kg. If the cart accelerates at 6 m/s2 during a 40 m sprint in 100 s, this is how much power the motorcycle had.
What is 67.2 watts?
This is the mass of a ball that is rolling with a speed of 26 m/s and has 1,200 J of energy.
What is 3.55 kg?