Physics, 13.03.2021 06:20 mckennacwilliams
1. Mrs. Cavanaugh set a record by running 200m in 21.34s. What was her average speed?
2. What is the speed of a truck that travels 12 kilometers in 15 minutes?
13.33 m/s
3. A sprinter runs 100m in 10 seconds. Find the speed of the runner.
100/10 is 10 m/s
4. Sound travels at a speed of 330 meters per second. How long does it take for the sound of thunder to travel 30 meters?
5. Sound travels at a speed of 330m/s. If a lightning bolt strikes the ground 10km away from you, how long will it take for the sound to reach you?
6. A cyclist leaves home and rides east for a distance of 45km. She returns home on the same bike path and the entire trip takes 4 hours. What was the average speed of her trip?
7.A cyclist must travel 800 kilometers. How many hours will the trip take if the cyclist travels at an average speed of 16km/hr?
8. A wooden 64 cm3 block has a density of 0.20 g/cm3. What is its mass?
9.Find the density of butter if 272g occupies 312cm3.
10.Find the density of balsa wood if 171g occupies 4.65cm3.
Answers: 1
Physics, 21.06.2019 21:00
Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15
Answers: 2
Physics, 22.06.2019 00:30
Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?
Answers: 1
Physics, 22.06.2019 15:30
Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.
Answers: 2
1. Mrs. Cavanaugh set a record by running 200m in 21.34s. What was her average speed?
2. What is th...
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