Fundamentals of Physics - math word problems - page 36 of 50
Number of problems found: 985
- Express train
An international express train drove from Kosice to Teplice. In the first 279 km, the track was repaired; therefore, it was moving at a speed of 10 km/h less than it was scheduled to drive. The rest of the 465 km trip has increased the speed by 8 km/h to - Mixing water
We should fill the 30-liter container with water at 60 degrees Celsius. How many liters of 80 °C water and how many liters of 20 °C water do we need to mix? - Orlík hydroelectric plant
The Orlík hydroelectric power plant, built in 1954-1961, consists of four Kaplan turbines. For each of them, the water with a flow rate of Q = 150 m³/s is supplied with a flow rate of h = 70.5 m at full power. a) What is the total installed power of the p - Walking
Lucy can walk about 3 4/5 miles each hour. How far can she walk in 2 hours 45 minutes? - Astronomical units AU
The given numerical data are the mean distances of planets from the Sun expressed in astronomical units. One astronomical unit is the mean distance of the Earth from the Sun, and approximately equals 150 000 000 km. Express the given mean distances in met - Two trains
From station A, the freight train traveled at a speed of 40 km/h in 9 hours. When he drove 15 km, the fast train started from station A in the same direction at 70 km/h. When will the freight train catch up? - Hiker Path Lengths The hiker went from A to B and back in 3 hours and 41 minutes. The road from A to B is first uphill, then flat, and finally downhill. A hiker walked up a hill at a speed of 4 km/h, on a flat surface at a speed of 5 km/h, and down a hill at a speed of 6 km
- Distance time
The cyclist covered a certain distance in 9 hours. How many hours does a car need to travel four times more if it moves three times faster? - Distances
On the way from Bratislava to Trebišov (440 km), 2 cars set off toward each other. The car from Bratislava set off at 8:00 a.m. and the car from Trebišov at 9:00 a.m. They met at 11:00 a.m. The car from Trebišov travelled 25 km less per hour than the othe - Motorcyclist and cyclist At noon, a cyclist left Šumperk for Olomouc at a 20 km/h speed. Thirty minutes later, a motorcyclist drove up behind him at 60 km/h. At what distance and at what time did the motorcyclist overtake the cyclist?
- Opening of a safe
How great a force would need to be exerted to open the rectangular door of a water-tight safe with dimensions 30 cm x 20 cm, built into the wall of a cabin of the sunken Titanic, which has been lying for more than 105 years on the bottom of the Atlantic O - A car
A car weighing 1.05 tonnes, travelling at the maximum speed limit in a village (50 km/h), crashes into a solid concrete barrier. Calculate the height from which the car would have to fall onto a concrete surface to produce the same impact force as in the - Rock lifting calculation
Can a boy lift a 75 kg rock from the bottom of a pond if we assume he will raise a 50 kg rock in the dry? The density of stone is 2500 kg/m3, and the density of water is 1000 kg/m3 - Dirty road Mr. Smith is on a road trip to a remote disc golf course 180 km away. He travels part of the way at 100 km/h along the highway and part of the way at 50 km/h along dirt roads. If it took 2 hours to get there, how many hours did he spend on dirt roads?
- Free fall
The free fall body has gone 10 m in the last 0.5 s. Find the body speed at the moment of impact. - Average Speed Walk Hill
The tourist walked on the plain for 2 hours at a speed of 6 km/h. For another hour, he climbed a steep hill at a speed of 3 km/h. What was his average speed? - Gold horseshoe
Calculate the volume of a gold horseshoe that weighs 750 g. - Disk angular velocity
The speed of the points lying on the circumference of the rotating disk is 6 m/s. The speed of the points, which lie 20 cm closer to the axis of rotation, is 4 m/s. Find the angular velocity of the wheel. - Motorcyclist
From Trutnov, the motorcyclist started at an average speed of 60 km/hour. At 12.30hrs, Peter began driving the passenger car at 80 km/hour. How many hours and at what distance will a car catch a motorcycle from Trutnov? - Hydraulic system force
The hydraulic system has: S1 = 0.02 m² S2 = 2 m² F1 =? F2 = 40000 N What force must we exert to get a force of 40,000 N?
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