Energy
What is... the bowling ball!
What is... 0 m/s!
If you double the mass of an object, you _______ the Kinetic Energy.
What is ... double!
A large textbook (m = 3kg) is placed on the floor. How much gravitational potential energy does it have?
What is... 0 J !
What is... 100 Joules!
What is... 588 Joules!
If you double the speed of an object, you ________ the amount of Kinetic Energy.
What is... quadruple!
If you triple the mass of an object, you ______ the amount of Potential Energy.
What is... triple!
It takes 10 J of energy to lift a backpack to a height of 1 m. It would take _____ J of energy to lift the backpack twice as high (2m).
What is... 20 J !
P = W/t
How much power is required to lift a 30 N rock 1 m in 2 seconds?
What is... 15 Watts!
A cat is standing on a tree branch 2m high, and has 100 J of PE. The cat will have _____ J of kinetic energy just before landing on the ground.
What is... 100 J.
A toy cart moves with 10 J of KE. What will its KE be if its speed is doubled?
A heavy backpack sits at rest on the top of a 1.5 m stool. The backpack has 147 J of PE. What is the mass of the backpack?
What is.... 10 kg!
What is... 200 J!
Two brothers are at the top of a playground slide ready to slide down together (1.5 meters tall). The younger brother is 30 kg, and the older one is 60 kg. Assuming no friction, who will be moving faster when they reach the bottom of the slide?
Who is... the older brother!
Which has more potential energy: a 2 kg bucket of water placed 5 meters high, or a 16 kg tub of water placed 0.5 m high?
(respond: Bucket or Tub)
What is... the bucket!
A tennis ball (m = 1kg) is served with 1,250 J of kinetic energy. How fast was the ball served?
What is... 50 m/s!
A small cat gains 58.8 J of PE when she jumps to the top of a 2m tall refrigerator. What is the mass of the cat?
What is... 3 kg!
A monkey (m=10 kg) is at rest in a tree, and has 490 J of PE. How high up in the tree is he?
What is... 5 meters!
A standard lightbulb emits 100 J every second. An LED lightbulb will emit 100 J every minute. Which lightbulb requires more power?
What is... the standard lightbulb!
Which has more KE energy:
An 80 kg quarterback, running at 10 m/s. OR
A 100 kg tight end, running at 5 m/s?
What is... the quarterback!
A baby duckling (m = 1kg) prepares to jump down from a low hanging branch. Before jumping, it has 2 J of PE. Assuming no air resistance, what speed will the duck be going just before it lands?
What is... 2 m/s!
An apple falls from a branch 6m high. It hits the ground with 44.1 J of KE. Assuming no air resistance, what was the mass of the apple?
What is.... 0.75 kg!
A man throws a baseball (m=1kg) straight up in the air. The ball has 294 J of KE when it leaves his hand. Assuming no air resistance, how high up will the ball travel?
What is.... 294 meters!
Give an example of kinetic energy being converted into gravitational potential energy.
What is..........