Velocity - 7th grade (12y) - math problems

Number of problems found: 137

Minute
Two boys started from one place. First went north at velocity 3 m/s and the second to the east with velocity 4 m/s. How far apart they are after minute?
Pumps
Pump that draws water at velocity 3.5 liters per second water from a construction trench take 35 minutes. a) Find out how many minutes the water would run out of the trench pump that draws 7.4 liters of water per second. b) What is the pumping velocity wo
Speed of clock
In how many minutes will the hour hand pass a straight angle and a right angle?
Aircraft nose down
How long will fall airliner from a height of 10000 m at speed 1,000 km/h?
Knight
Knight passed 13 km long track in 26 minutes, what was his average speed?
Bob traveled
Bob traveled 20 meters to Dave's house. He arrived in 3 minutes. What was his average speed for the trip.
Earth rotation
How fast is the place on the Earth's equator moving if the Earth's radius is 6378 km?
RPM
An electric motor makes 3,000 revolutions per minutes. How many degrees does it rotate in one second?
Magnitude of angle
What magnitude has an obtuse angle enclosed by the hands of clocks at 12:20 hours?
Cyclist 9
A cyclist travels at a a speed of 4.25 km per hour. At that rate, how far can he travel in 3.75 hours?
Time clock
What is the angle of the hour hand and the minute hand, if it is 0:40?
Mail train
The speed of mail train is 1370 meter per minute. Express it in miles per hour correct to three significant figure . Given that 1 meter =39.37 inches.
An airplane
An airplane flies 1440 km in 2 1/4 hours. What is its average speed in km per hour?
Driver
I drive at an average speed of 70km/h, I drive 10 thousand km. How long did it take me?
Average speed
Michal went out of the house by car at speed 98 km/h. He came into the goal place for 270 minutes. Determine the distance between the two places.
Car loop
The toy car runs at an average speed of 2 m/s. In a minute, it will pass the entire circuit five times. How long is the loop?
Highway
Six trucks will be used to build the roadside 18 days. After 3 days, two more trucks were sent to build. How long will it take for material move?
Thunderstorm
The sound travels 1 km in about 3 seconds. How far is the storm if there is a time interval of 8 seconds between lightning and thunder?
Walking
Lucie can walk about 3 4/5 miles each hour. How far can she walk in 2 hours 45 minutes?
Cable car
The cable car will carry 1280 passengers in 40 minutes. How many people will be transported in 2.5 hours?