Speed Calculating
What are the two things you need to know to calculate speed?
Distance and Time
What is Potential and Kinetic Energy?
(Definitions)
P.E = Stored energy (ready to be used)
K.E = Energy of Motion
Velocity includes direction with how fast the object moves.
A student kicks a soccer ball, and it rolls quickly across the field. What type of energy does the moving ball have?
Kinetic Energy
Which continent has no permanent humans living on it?
Antarctica
A bicycle travels 60 meters in 10 seconds. Calculate its average speed in meters per second.
6 m/s
A soccer ball is sitting still at the top of a hill. What type of energy does it have because of its position above the ground?
Gravitational potential energy
A runner moves at 6 meters per second toward the north. Which term describes the runner's motion
Velocity
Maya runs at 4 meters per second toward the classroom. Which term describes her motion when both her speed and direction are known?
Velocity
100
A runner travels 400 meters in 80 seconds. What is the runner's average speed in meters per second?
5 m/s
How can I increase the Potential energy of an object?
(Name both ways)
A car's speed increases from 20 miles per hour to 45 miles per hour in 5 seconds. Which term best describes what is happening to the car
Acceleration
A school bus travels at 35 miles per hour. The statement does not tell you which direction the bus is traveling. What is it describing?
Speed
What fruit is actually part of the rose family?
Apples
A cyclist travels 2.4 kilometers in 8 minutes. What is the cyclist's average speed in meters per second?
5 m/s
How can I increase the Kinetic energy of an object? (List both ways)
Increase the speed it travels and Mass of the obejct
What is the difference between Speed and Acceleration?
Speed is how much distance has changed over time, Acceleration is how much speed has changed over time
Two skateboarders have the same mass. One is moving quickly down a sidewalk, and the other is moving slowly. Which skateboarder has more kinetic energy, and why?
The faster skateboarder, because greater speed means greater kinetic energy when mass is the same.
What fruit has it's seeds on the outside?
Strawberries
A car travels 135 kilometers in 1 hour and 30 minutes. What is its average speed in kilometers per hour?
90 km/hr
A roller coaster starts at the top of a tall hill and races down to the bottom. Describe how its gravitational potential energy and kinetic energy change as it moves downhill. Ignore friction.
Potential energy decreases while kinetic energy increases.
Two students ride their bikes at 12 miles per hour. Student A travels east, while Student B travels west. Do they have the same speed, the same velocity, both, or neither?
Same speed but different velocity because they travel in different directions.
A basketball player runs around the court at a constant speed but turns to run in a different direction. Is the player accelerating? Explain your answer.
Yes. Acceleration occurs because the player's direction changes, so velocity changes even though speed stays constant.
What is the first number to contain the let "A" in its name?
1,000