D=rt and y=kxPractice

Rate of speed is equal to 

• Distance/Time
• Time/Distance
• Time x Distance
• Acceleration

If a man runs at a speed of 70 m/s, and has a time of 30 s. What is the distance he ran?
r=
d=
t=

• 2100 m
• 0.233 m
• 2.33 m
• 300m

If a robot chases you down at a speed of 900 m/s for a distance of 2700 m. How long has the robot been chasing you?
d=
r=
t=

• .03 s
• 4.5 s
• 3 s
• .045s

If a puppy runs across a park at a speed of 15 m/s. The puppy also has a time of 5 seconds. How far did the puppy run?
d=
r=
t=

• 5m
• 3m
• 0.33 m
• 75m

Joanna drives for 400km at an average speed of 80km/h. How long was her journey?
d=
r=
t=

•  15 hrs long
•  10 hrs long
•  5 hrs long
•  20 hrs long

Avery likes to walk 30 feet in 10 seconds. What is her speed?
d=
r=
t=

• 6 feet/sec
• 3 feet/sec
• 10 feet/sec
• 2 feet/sec

Michael rides his bike at a constant speed of 12 miles per hour. How far can he travel in 2 hours?

• .5 mile
• 24 Kilometers
• 6 kilometers
• 24 miles

A taxi hurries at a constant speed of 42 miles per hour. How long will it take to travel a distance of 42 miles?
d=
r=
t=

• 42 hours
• 1 hour
• 2 hours
• 1 minute

What is the time formula ?

• T=R/D
• T=D/R
• T=D*R
• T=minutes

What is the rate formula?

• R=D/T
• R=D*T
• R=T/D
• We did not learn this