An arrow is shot vertically upward and then 1.92 s later passes the top of a tree 42.7 m high. How much longer will the arrow travel upward, and how high will it go? Time ______ Height _______
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An arrow is shot vertically upward and then 1.92 s later passes the top of a tree 42.7 m high. How much longer will the arrow travel upward, and how high will it go?
Time ______
Height ________
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- KEY TERMS 1. physics (intro) 2. position (2.1) 3. motion 4. scalar (2.2) 5. vector 6. average speed 7. distance 8. instantaneous speed 9. average velocity 10. displacement 11. instantaneous velocity 12. acceleration (2.3) 13. average acceleration 14. acceleration due to gravity 15. free fall 16. terminal velocity 17. centripetal acceleration (2.4) 18. projectile motion (2.5) For each of the following items, fill in the number of the appropriate Key Term from the preceding list. r. _____ Displacement/travel timeAn elevator starts from the ground floor and moves up with a constant speed of 4 m/s. If a bolt falls off the elevator 2 seconds after it start moving,A) How long does it take for the bolt to hit the ground?B) What is the speed of the bolt just before it hits the ground?C) If the elevator keeps moving after the bolt falls off, what is the distance between the elevator and the bolt when the bolt is 1 meter from the ground?A toy rocket moving vertically upward passes by a 1.8 m -high window whose sill is 7.0 m above the ground. The rocket takes 0.16 s to travel the 1.8 m height of the window. a) What was the launch speed of the rocket? Assume the propellant is burned very quickly at blastoff. b) How high will the rocket go?
- A boy walks to the store using the following path: 0.4 miles west, 0.2 miles north, 0.3 miles east. What is his displacement from his house? (miles)A tourist drops (from rest) a ping pong ball from the top of the tower, which has a height of 524 meters. Assuming no air resistance, how long does it take for the ping pong ball to hit the ground? Express your answer to three significant figures and include the appropriate units. HA t = Value Units Submit Request AnswerAn arrow is shot vertically upward and then 2.13 s later passes the top of a tree 36.3 m high. How much longer will the arrow travel upward, and how high will it go? Find the time and height
- Use a(t) = −9.8 meters per second per second as the acceleration due to gravity. (Neglect air resistance.) A canyon is 600 meters deep at its deepest point. A rock is dropped from the rim above this point. How long will it take the rock to hit the canyon floor? (Round your answer to one decimal place.) __________ secAn object is dropped from a vertical distance of 75 m above the ground, and it takes some time to that distance. A second identical object is launched from the same height, with horizontal velocity of 45.9 m/s . How long_ seconds does the second object take to fall the 75 m to the ground? Round to two digits after the decimal.A cannon ball is launched into the air with an upward velocity of 294 feet per second, from a 10-foot tall cannon. The height hh of the cannon ball after tt seconds can be found using the equation h=−16t2+294t+10h=-16t2+294t+10. A) What was the initial height of the cannon ball? feet B) How many seconds will it take for the cannon ball to hit the ground? seconds
- A cannon ball is launched into the air with an upward velocity of 350 feet per second, from a 7-foot tall cannon. The height h of the cannon ball after t seconds can be found using the equation h-- 16+ 350 + 7. 18 A) what was the initial height of the cannon ball? feet B) How many seconds will it take for the cannon ball to hit the ground? seconds Round to 3 decimal place.)A rock is thrown vertically upwards from ground level at t = Os. At t = 2.7 s it passes the top of a tall tower, and 1.0 s later it reaches its maximum height. What is the height of the tower? Input your answer with 1 decimal placeA rock is tossed from the top of a building at an angle of 30° above the horizontal with an initial speed of 12 m/s. The rock lands on the ground 2.5 s after it is tossed. What is the height of the building (in m)? m