Potential Energy
Kinetic Energy
Force, Work & Energy
Forms of Energy
Motions & Force
100
Energy is created when you change the reference point of an object
True or False
FALSE we are not creating energy
100
As mass increases, KE ...
a) increases
b) decreases
c) stays the same
increases
100
What is energy?
the ability to do work
100
Which type of energy is produced when the handle of a pencil sharpener turns?
a) Light Energy
b) Magnetic Energy
c) Magnetic Energy
d) Mechanical Energy
d) Mechanical Energy
100
To calculate average speed you must
What is divide the total distance by the total time?
200
How could you increase the object's gravitational potential energy (GPE) without changing its distance from the ground (height) and gravity?
a) Decrease the object's mass
b) Increase the object's mass
c) Increase the object's height
d) Decrease the object's height
b) Increase the object's mass
200
When you triple the speed of an object. What factor will Its kinetic energy will increase by?
a) 2
b) 3
c) 6
d) 9
9
200
When an object changes its motion and starts to accelerate, we consider the object to have:
a) balanced
b) unbalanced
Unbalanced forces
200
What kind of energy is a ballon holding air
a) elastic potential energy
b) mechanical Energy
c) heat energy
d) kinetic energy
a) elastic potential energy
200
What would constant speed look like on a distance v time graph?
What is a vertical line?
300
At which point is potential energy greatest?
W
300
How much kinetic energy does a 6.00 kg ball have if it moves with a velocity of 3.00 m/s?
a) 2.00 J
b) 9.00 J
c) 18.0 J
d) 27.0 J
d) 27.0 J
300
When Izzy and Zoe pull on the rope with the same amount of force, the forces are _____.
balanced
300
Which of the following is NOT mechanical energy?
a) Pedalling a bike
b) Turning on a light bulb
c) Rowing a boat
d) Running up a hill
b) Turning on a light bulb
300
An object has a negative acceleration, this means it is
What is slowing down?
400
A child with a mass of 50.0 kg is at the top of a 4.00 m slide. What's the gravitational potential energy of the child?
1.96 x 10^3
400
What is the mass of a moving object that has 100 Joules of kinetic energy and moves at a velocity of 2 m/s?
a) 25 kg
b) 50 kg
c) 100 kg
d) 200 kg
50 kg
400
What does the slope of POSITION-TIME GRAPHS represent?
VELOCITY!!
400
What form of energy does the sun give?
a) Chemical energy
b) Light energy
c) Light and Thermal energy
d) Thermal energy
c) Light and Thermal energy
400
Another word for distance in a certain direction
What is displacement?
500
A 500 g bird has 58.0 J of gravitational potential energy when it is perched high up in a tree. What's the bird’s vertical height from the ground.
11.8 m
500
What is the velocity of a ball with a mass of 50.0 g, with the kinetic energy of 2.33 x 10^ 4 J?
a) 9.32 x 10^2 m/s
b) 9.32 x 10^5 m/s
c) 9.65 x 10^2 m/s
d) 3.05 x 10^1 m/s
c) 9.65 x 10^2 m/s
500
A large crane did 3.3 x 10^4 J of work in lifting a demolition ball at a vertical distance of 12.5 m. Calculate the average force exerted by the chain on the ball.
2.6 x 10^3
500
What type of energy does an oven produce?
a) light energy
b) light and heat energy
c) heat energy
d) mechanical energy
b) light and heat energy
500
This is a velocity-time graph. What is the object doing in segment C?
Negative acceleration