Fundamentals of Physics - math word problems - page 42 of 48
Number of problems found: 953
- Incendiary cord
The flame spreads along the incendiary cord at a 30 m / min speed. How long must the cord be so that the launcher can move to a distance of 200 m if it moves at a speed of 4 m/s? - Motorcycle overtaking
A truck that is 6 m long travels at a speed of 66 km/h. A motorcycle traveling at a speed of 20 m/s overtakes him. Overtaking starts 16 m behind the car and ends 18 m in front of the car. How long does this overtaking last, and what track does the motorcy - Body meeting From two places, M and N, 100 m apart, two bodies move simultaneously in the positive direction of the x-axis. A body moving from place M has a speed of 5 m/s, from place N 3 m/s. How long does it take for the first body to catch up with the second? What
- Car meeting
Cars from two cities, A and B, 90 km apart, drove towards each other simultaneously. The car from city A had a constant speed of 72 km/h, and the car from city B had a speed of 90 km/h. How long and how far from city B will they meet? - Mushrooms
Fresh mushrooms contain 90% water, dried only 12%. How many kilograms of fresh mushrooms are needed for 5kg dried? - Coal consumption
The locomotive consumes 22 kg of coal when climbing. It consumes 10 kg when descending and driving on a flat surface. The line is 62 km long, and coal consumption on this line was 800 kg. How many km of the climb was there on the track? - Light intensity
The light beam loses 1/12 of its intensity as it passes through the glass plate. What will the beam's intensity be after passing through a ten times stronger plate? - Phone battery
Mrs. Helena has an old cell phone with nothing to do but makes phone calls. The cell phone will discharge in 72 hours when fully charged and on the phone. Three hours of calling in a row are enough to discharge a fully charged phone. After the last full c - A stone
There is a stone weighing 60 kg on the billet. The distance from the support point to the stone is 20cm. The length of the billet is 1m. Determine the force exerted by the hand at the end of the billet. - Average speed
The plane from Prague to Warsaw flies 540 km in 1 hour and 12 minutes. Find the average speed. - Equator hoop
The equator is approximately 40,000 km long. What would be the gap between an imaginary hoop 40001 km long and the ground? Would a mouse crawl under it? - Intersection - cars
The tractor drove through the crossroads at a speed of 36 km/h. Ten minutes later, a passenger car moved at 54 km/h. How long and at what distance from the intersection will the car run over the tractor? - Braking acceleration
At the start of braking, the car had a speed of 72 km h at -1. It stopped on a track of 50 m. What was the acceleration, and how long did the braking last? - The swing
To swing the two girls. Aneta weighs 45 kg and Simon 35 kg weight. How far should Simon sit from the middle of the swing so it is balanced if we know that Aneta is sitting at a distance of 1,5m? How far are girls sitting apart? - Cork weight
The cork has a diameter of 20 mm and is 38 mm high. How many plugs will weigh 1 kg/cork density = 0.3 g / cm cubic /. - Hot air balloon
The center of the balloon is at an altitude of 600 m above the ground (AGL). The observer on earth sees the center of the balloon at an elevation angle of 38°20'. The balloon is seen from the perspective of an angle of 1°16'. Calculate the diameter of the - Cruise liner
The cruise liner runs along the river between points A and B. The journey downstream takes 40 minutes and 1 hour upriver. The flow rate of the river is 3 km/h. What is the speed of a cruise liner? - Vacuum efficiency
Determine the efficiency of a vacuum cleaner with a power input of 1.2 kW when the suction power is 360 W. - Mixer work
What kind of work did the mixer with an efficiency of 30% do when it did 4.5 kWh of work? - Efficiency
What is the power output of a kettle 2 kW with an efficiency of 90%?
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