Speed Worksheet - Wappingers Central School District
Name:_______________________ Date:______________
Period:_______ Formula Challenge
What do the following units represent?
Use D for distance, T for time, S for speed, A for acceleration, M for Momentum and N for Force
___ D 1. 14 km __ N_4. 6N __ S_7. 14 mph __ D_ 10. 1.4 m
__ S_ 2. 30 m/s ___ A5. 12 cm/s2 __ T_8. 3.2 sec __ A_ 11. 6 cm/min/sec
__ T_ 3. 34 min __ S _6. 150 mph __ A_9. 25 ft /s2 __ M_ 12. 3 g x m/s
Write how you know which formula to use?
SPEED MOMENTUM ACCELERATION
Speed or Velocity = Distance/Time Momentum = Mass X Velocity Acc= Final speed- Initial speed/time
Distance = Time X Velocity Mass = Momentum/Velocity
Time = Distance/Velocity Velocity = Momentum/Mass
Write the proper formula used to complete the problem:
Write DENSITY, SPEED, or MOMENTUM
1. Mass and velocity. 2. Velocity and Time. 3. Density and Mass
Formula? _ MOMENTUM Formula? _ SPEED __ Formula? DENSITY __
Practice Problems:
1. If Steve throws the football 50 meters in 3 seconds, what is the average speed (velocity) of the football?
Formula: Speed=Distance/Time 50m / 3s = 16.7 m/s
2. If it takes Ashley 3 seconds to run from the batters box to first base at an average speed (velocity) of 6.5 meters per second, what is the distance she covers in that time?
Formula: Speed=Distance/Time distance
6.5m/s = 3sec = 19.5m
3. Bart ran 5000 meters from the cops and an average speed (velocity) of 6 meters/second before he got caught. How long did he run?
Formula: Speed=Distance/Time 5000m
6 m/s = time = 833.3sec
4. What is the acceleration of an object that takes 20 sec to change from a speed of 200 m/s to 300 m/s?
Formula:
Acc= Final speed- Initial speed/time 300m/s-200m/s
Acc = 20sec = 5 m/s2
5. A car traveling south at a velocity of 30 m/sec slows down to a velocity of 10 m/sec in 10 sec. Calculate the deceleration.
Formula: Acc= Final speed- Initial speed/time
10m/s – 30 m/s
Acc = 10 sec = -2.0 m/s2
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