Speed
What formula is used to calculate speed?
distance / time = speed
What unit is used to measure kinetic energy?
Joules (J)
What is motion?
Changing position over time
A racer travels 50 meters in 10 seconds. What is their speed?
5 m/s
What two factors affect an object's kinetic energy?
Mass and Speed
Which has more kinetic energy at the same speed: a 1 kg ball or a 5 kg ball?
5 kg ball
A cyclist travels at 4 m/s for 15 seconds. How far did they travel?
60 meters
A 2 kg ball moves at 3 m/s. What is its kinetic energy?
9 Joules
The ability to do work on something else is...
Energy
A swimmer travels 120 meters at 6 m/s. How many seconds were they swimming?
20 seconds
A 4 kg object moves at 5 m/s. Calculate its kinetic energy.
50 Joules
Can a lighter object have more kinetic energy than a heavier object? How?
Yes, it has a greater speed!
Two racers travel 100 meters. Racer A takes 20 seconds and Racer B takes 16 seconds. What are their speeds, and who is faster?
Racer A = 5 m/s
Racer B = 6.25 m/s
Racer B is faster!
An object has 100 J of Kinetic Energy, and is going 5 m/s. What is its mass?
mass = 8
What has a greater impact on Kinetic Energy: mass or speed?
Speed!