When Lolita walks to school in the morning, it takes her 15 minutes to walk the 1.5 kilometer distance. When she walks home, she picks up her little sister and it takes her twice as long. Does Belinda's speed increase or decrease with her little sister?
a.) Belinda's speed walking to school:
b.) Belinda's speed walking with her sister:
c.) Impact of the little sister on Belinda's speed:
Simon rolled his Hot-Wheel 300 centimeters (cm) in 1.75 seconds (sec). Noah rolled his 365 cm in 2 sec.
Simon's speed:
Noah's speed:
Whose car ran on a steeper ramp?
A biker rode up a 20 km hill in 2 hours and down the hill in 0.5 hour without stopping. What was the his speed:
a.) Going up the hill
b.) Going down the hill
c.) For the whole trip
It took Ellie 4 hours to paddle her canoe 10 km upstream. After a 3 hour picnic, she paddled home in 1 hour.
a.) How fast did she paddle upstream?
b.) What was her average speed while paddling her canoe?
c.) What was her average speed for the whole day?
Mark's family drove 180 km to the beach at 90 km/hr. They drove home at 60 km/hr.
a.) What was their overall time they were actually on the road?
b.) What was their average speed for the whole trip?
Three girls raced their model cars down a 40 meter track. There times are in the table. What was the average speed at which all the cars rolled down the track?
d (m) | ||
|---|---|---|
Jessica | 15 | 40 |
Kristi | 22 | 40 |
Laticia | 12 | 40 |
a.) Total distance:
b.) Total time interval:
c.) Average speed:
Ben took off in a plane at 9:30 AM and traveled 4030 km, from Seattle to Baltimore, landing at 7:00 PM. During his trip, he had to take a layover for 1.5 hours in Denver. After he left Denver, the remainder of the trip took 3 hours.
a.) What was Ben's average speed from Seattle to Baltimore?
b.) What was Ben's speed while he was actually in the air?
Submit a photo of your math worked on on a sheet of paper (must be handwritten). This is worth half of the points of this section.
If you used a second sheet of paper, use this to submit it.