Motion and speed

What is the formula for calculating speed? 

• S=T/D
• S = D/T
• S= D X T

Tags

NGSS.MS-PS3-1

Bob ran the 50 meter dash. It took him 6.3 seconds. What was his speed in meters/second?

• 7.9 m/s

• 0.1 m/s

• 50 m/s

• 6.3 m/s

A snowboarder was in a competition. It took her 53 seconds to ride down a 75 meter hill. What was her average speed in meters per second?

• 0.7 m/s
• 53 m/s
• 1.4 m/s
• 75 m/s

If a cyclist rides for 45 km in 3 hrs what is his speed?

• 0.06 km/hr

• 15 km/hr

• 135 km/hr

• 15 hr/km

What is the formula used to calculate distance if you know the speed and the time?

• D = S X T
• D = S/T
• D = T/S

What is the formula used to calculate time, if you know the speed and the distance? 

• T= S/D
• T= S X D
• T = D/S

What is speed?

• how far you go
• how much distance is covered over a period of time
• how fast you accelerate
• the change in the location of a object

Tags

NGSS.MS-PS3-1

Total distance divided by total time is

• average speed
• constant speed
• instantaneous speed
• acceleration

What is the speed of an object that travels 60 meters in 4 seconds?

• 240 m/s
• 15 m/s
• 0.067 m/s
• 15 mph

Tags

NGSS.MS-PS3-1

What two measurements are necessary for describing the motion?

• Mass and time

• Temperature and mass

• Mass and distance

• Distance and time