Springs
What is the spring energy formula?
(1/2)kx2
When a ball rolls down an incline, what energy transformation is occurring?
PE to KE
What is the formula for work?
What is the formula for power?
P=W/t
What counties have the top three most medals in the Olympics all time?
USA
Russia
Germany
A spring is compressed 0.1 m and stores 100 J of energy. What is the spring constant for this spring?
20,000 N/m
A block slides down from the top of a ramp that is 2 m tall. What is the block's speed at the bottom of the ramp?
6.26 m/s
A box is pushed with a force of 12 N across a friction-less floor. What is the total work done if the box is pushed 0.5 m?
6 J
How much power is expended if you lift a 40-N rock 5 meters in 2 second?
100 W
Who invented Peanut Butter?
Marcellus Gilmore Edson
A man drops a metal ball from a height of 100 m and it falls onto a 1.5 m spring below. The spring has a k value of 3000 N/m and compresses to half of it's original length. What is the mass of the ball?
0.86 kg
A block slides down from the top of a ramp that is 2 m tall. What is the block's speed halfway down the ramp?
4.43 m/s
DAILY DOUBLE
A box slides down a 30 degree ramp from a height of 1 m. The ramp and the box have a coefficient of kinetic friction of 0.22. What is the speed of the box at the bottom of the ramp?
3.48 m/s
A 50-kg girl runs up a flight of stairs in 5.0 s. Her net upward displacement is 5.0 m. Approximately, what average power did the girl exert while she was running?
490 W
DAILY DOUBLE
Name the 5 actors who have played live adaptations of The Joker.
Joaquin Phoenix
Jared Leto
Heath Ledger
Jack Nicholson
Cesar Romero
Is a spring harder or easier to compress if it has a low k value?
Easier
A 1,000,000,000,000,000,000,000,000,000,000 kg block has a speed of 8 m/s and is approaching a ramp. How high up the ramp will the block make it?
3.27 m
Can work be done on a box that is moving at a constant velocity?
Yes
What is the unit for power? (full word)
Watts
This QB got injured last night in a game against the Denver Broncos.
Patrick Mahomes
A spring with a spring constant of 12 N/m is compressed 0.5 m with a 1kg ball at the end. How fast will the ball travel after the spring is released?
1.7 m/s
A rocket has a net upward acceleration of 10 m/s2. The rocket has a mass of 29,000 kg. What is the kinetic energy of the rocket after 10 seconds of flight?
1,450,000 J
A 2 kg box slides down a 20 degree ramp from a height of 1 m. The ramp and the box have no friction between them. How far will the box move after leaving the ramp, if the friction between the box and the ground is 0.5?
2 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. Determine the power requirement of the escalator in order to move this number of passengers in this amount of time.
933 W
This Maryland shooting guard plays for the Atlanta Hawks.
KEVIN HUERTER