Miscellaneous
A mass is moving at some velocity, v. Determine the effect on kinetic energy if the velocity doubles.
What is quadruples?
An ideal spring has a spring constant of 2500 N/m. ____ is stored in the spring when the spring is stretched 4.0 cm.
What is 2.0 Joules?
The spring in a BB gun fires a 10-gram pellet 100 meters straight up into the air when the spring is compressed 0.10 meters. Determine the spring constant.
What is 2000 N/m?
Ryan pushes a crate 55 meters in 25 s by applying 110 N to the crate and does 1900 Joules of work on the crate. Determine the angle above the horizontal that Ryan pushes the crate. (use degrees)
What is 72 degrees?
The time it takes Janet to do 3200 Joules of work if her power is 73 Watts.
What is 44 seconds?
The spring is compressed by some length, x. Determine the effect on elastic potential energy if the spring constant is halved.
What is halved?
A slingshot is pulled back 0.15 meters and launches a stone. If the slingshot has a spring constant of 150 N/m, determine the elastic potential energy of the slingshot.
What is 1.7 Joules?
Nathan drops a tennis ball from the top of a tall building, and the ball hits the ground with a velocity of 51.0 m/s. Determine the height of the building.
What is 130 meters?
Ryan pushes a crate 55 meters in 25 s by applying 110 N to the crate and does 1900 Joules of work on the crate. What is Ryan's power output?
What is 76 Watts?
A 0.54-kg block is attached to a spring which has a spring constant of 660. N/m. The block hangs 14.4m above the ground while the spring is compressed 0.321 m. When the block is launched off of the spring, the block just touches the ground. Determine the initial elastic potential energy of the block.
What is 34 Joules?
Energy due to the deformation of an elastic object
What is elastic potential energy?
Bob dives off a platform with 12000 Joules of energy. If his mass is 40-kg, what is Bob 's speed right before hitting the water?
What is 25 m/s?
A human shoots out of a canon at 56m/s and has a kinetic energy of 76,500 J. Determine the human's mass.
What is 49kg?
Most power:
Linda: 3000 J in 4 seconds
Sara: 5000 J in 10 seconds
Who is Linda?
A 0.54-kg block is attached to a spring which has a spring constant of 660. N/m. The block hangs 14.4m above the ground while the spring is compressed 0.321 m. When the block is launched off of the spring, the block just touches the ground. Determine the initial gravitational potential energy of the block.
What is 78 Joules?
A 2kg object that is resting 10.0 m above the Earth’s surface has more ____ than a 2kg object that is resting 5.0 m above Earth’s surface.
What is gravitational potential energy?
The kinetic energy of a 440-kg roller coaster car that is moving with a speed of 15m/s.
What is 49,500 Joules?
A human shoots out of a canon at 56m/s and has a kinetic energy of 76,500 J. If the cannon was fired straight into the air, how high would the human go?
What is 156 meters?
A 44kg box is resting on a frictionless surface. Marcus pulls the box with a rope with a force of 130. N at 33.3° above the horizontal. The box moves 44 meters. Determine how much work is done on the box.
What is 4781 Joules?
A 0.54-kg block is attached to a spring which has a spring constant of 660. N/m. The block hangs 14.4m above the ground while the spring is compressed 0.321 m. When the block is launched off of the spring, the block just touches the ground. Determine the kinetic energy of the block right before it touches the ground.
What is 112 Joules?
Unit for energy
What is a Newton*meter?
The gravitational potential energy gained by a 75-kg mass that is lifted 8 meters off the ground.
What is 6000 Joules?
A prankster drops a water balloon from the top of a building. The balloon travels 29.1m/s when it strikes a window ledge that is 1.5m above the ground. Determine the height of the building. (Hint: initial velocity = 0m/s)
What is 43.8 meters?
A 44kg box is resting on a frictionless surface. Marcus pulls the box with a rope with a force of 130. N at 33.3° above the horizontal. The box moves 44 meters. Determine the speed of the box after the work is done.
What is 14.7 m/s?
A 0.54-kg block is attached to a spring which has a spring constant of 660. N/m. The block hangs 14.4m above the ground while the spring is compressed 0.321 m. When the block is launched off of the spring, the block just touches the ground. Determine the speed of the block right before it touches the ground.
What is 20 m/s?