Work
This is the formula for work when a constant force acts in the direction of motion.
What is W = F*d?
This is the energy of motion.
What is kinetic energy?
This is stored energy due to position.
What is potential energy?
This is the rate at which work is done.
What is power?
This law says energy cannot be created or destroyed, only transferred or transformed.
What is the law of conservation of energy?
A 10 N force pushes an object 3 m in the same direction. Find the work.
What is 30 J?
This is the formula for kinetic energy.
What is KE = 1/2*mv^2?
This is the formula for gravitational potential energy.
What is PE = mgh?
This is the formula for power.
What is P = W/t?
A moving car going uphill is converting kinetic energy into this kind of energy.
What is gravitational potential energy?
If the force is perpendicular to the displacement, this is the work done.
What is 0 J? (No work done)
A 2 kg object moves at 4 m/s. Find its kinetic energy.
What is 16 J?
A 2 kg object is lifted 5 m. Use g = 9.8 m/s^2. Find the potential energy.
What is 98 J?
A machine does 100 J of work in 5 s. Find the power.
What is 20 W?
An object at rest on a shelf has this type of mechanical energy.
What is potential energy?
A box is pushed 5 m with a force of 12 N. Find the work done.
What is 60 J?
If speed doubles, kinetic energy changes by this factor.
What is 4?
If height doubles, gravitational potential energy does this.
What is it doubles?
If the same amount of work is done in less time, power does this.
What is it increases?
A 3 kg object moves at 2 m/s. Find its kinetic energy.
What is 6 J?
This unit is used to measure work and energy.
What is the joule?
A 5 kg object has 90 J of kinetic energy. Its speed is this.
What is 6 m/s?
A 4 kg object has 196 J of gravitational potential energy. Its height is this.
What is 5 m?
A motor has a power of 50 W and runs for 4 s. The work done is this.
What is 200 J?
A 2 kg book is on a shelf 3 m high. Find its gravitational potential energy using g = 9.8 m/s^2.
What is 58.8 J?