Question

In: Physics

4. A physics student throws two bricks from the top of Fawcett Hall. Brick A is...

4. A physics student throws two bricks from the top of Fawcett Hall. Brick A is thrown straight up with an initial speed vo, and brick B is thrown straight down with the same initial speed. If air resistance is negligible, when they strike the ground

      a) B has greater speed.      b) A has greater acceleration.      c) B has greater acceleration.

      d) A and B have same speed.      e) A has greater speed.

5. A bullet shot straight up returns to its starting point in 10 s. If it moved frictionlessly, its initial speed must have been _____ m/s.

      a) 24.5       b) 9.8        c) 49         d) 196        e) 98

6. A butterfly moves with a speed of v = 12.0 m/s. The x-component of its velocity is 8.00 m/s. The angle between the direction of its motion and the x-axis must be

      a) 48.2°      b) 41.8°      c) 53.0°      d) 33.7°      e) 30.0°

7. Two displacement vectors have magnitudes of 5 m and 7 m, respectively. When these two vectors are added, the magnitude of the sum is

      a) between 2 m and 12 m.      b) larger than 12 m.      c) 12 m.      d) 2 m.

      e) smaller than 2.

8. A ball thrown horizontally from a point 24 m above the ground, strikes the ground after traveling horizontally a distance of 18 m. Its initial speed was _____ m/s.

      a) 8.13       b) 13.1       c) 39.8       d) 7.35       e) 12.5

9. You hit a tennis ball over the net. When the ball reaches its maximum height, its speed is

      a) greater than its initial speed.      b) less than its initial speed.

      c) equal to its initial speed.      d) zero.

Solutions

Expert Solution

The solution is given below.

Thank you.

genius_generous answered 2 years ago
Next > < Previous

Related Solutions

A company is manufacturing building bricks and fire bricks. Both production require two processes. Brick forming...
A company is manufacturing building bricks and fire bricks. Both production require two processes. Brick forming and Heat treatment. The requirements for the two bricks are: Building Bricks Fire Bricks Forming per 100 bricks 3 hours 2 hours Heating treatment per 100 bricks 2 hours 5 hours Total cost of the two departments in one months were: Forming $ 21 200 Heat treatment $ 48 800 Units produced during the month was: 130 000 70 000 Require: Prepare statement of...
To explore the physics of freefall, a curious student climbs to the top of the Las...
To explore the physics of freefall, a curious student climbs to the top of the Las Vegas-version of the Leaning Tower of Pisa (to be built in the style of the Las Vegas-version of the Eiffel Tower, the Statue of Liberty, …) with two identical cannonballs and conducts a series of experiments. Part A) The student drops one cannonball, and exactly 1.0 s later drops the other cannonball from the same height. What is the time interval between the first...
Quality Brick Company produces bricks in two processing departments—Molding and Firing. Information relating to the company’s...
Quality Brick Company produces bricks in two processing departments—Molding and Firing. Information relating to the company’s operations in March follows: a. Raw materials were issued for use in production: Molding Department, $29,400; and Firing Department, $4,500. b. Direct labor costs were incurred: Molding Department, $18,900; and Firing Department, $5,100. c. Manufacturing overhead was applied: Molding Department, $22,200; and Firing Department, $36,800. d. Unfired, molded bricks were transferred from the Molding Department to the Firing Department. According to the company's process...
Quality Brick Company produces bricks in two processing departments—Molding and Firing. Information relating to the company’s...
Quality Brick Company produces bricks in two processing departments—Molding and Firing. Information relating to the company’s operations in March follows: Raw materials used in production: Molding Department, $26,900; and Firing Department, $4,000. Direct labor costs incurred: Molding Department, $17,000; and Firing Department, $4,500. Manufacturing overhead was applied: Molding Department, $22,200; and Firing Department, $36,300. Unfired, molded bricks were transferred from the Molding Department to the Firing Department. According to the company’s process costing system, the cost of the unfired, molded...
Quality Brick Company produces bricks in two processing departments—Molding and Firing. Information relating to the company’s...
Quality Brick Company produces bricks in two processing departments—Molding and Firing. Information relating to the company’s operations in March follows: a. Raw materials were issued for use in production: Molding Department, $23,000; and Firing Department, $8,000. b. Direct labor costs were incurred: Molding Department, $12,000; and Firing Department, $7,000. c. Manufacturing overhead was applied: Molding Department, $25,000; and Firing Department, $37,000. d. Unfired, molded bricks were transferred from the Molding Department to the Firing Department. According to the company's process...
Quality Brick Company produces bricks in two processing departments—Molding and Firing. Information relating to the company’s...
Quality Brick Company produces bricks in two processing departments—Molding and Firing. Information relating to the company’s operations in March follows: Raw materials used in production: Molding Department, $26,100; and Firing Department, $4,300. Direct labor costs incurred: Molding Department, $19,900; and Firing Department, $4,700. Manufacturing overhead was applied: Molding Department, $23,100; and Firing Department, $36,200. Unfired, molded bricks were transferred from the Molding Department to the Firing Department. According to the company’s process costing system, the cost of the unfired, molded...
Quality Brick Company produces bricks in two processing departments—Molding and Firing. Information relating to the company’s...
Quality Brick Company produces bricks in two processing departments—Molding and Firing. Information relating to the company’s operations in March follows: Raw materials used in production: Molding Department, $29,000; and Firing Department, $5,600. Direct labor costs incurred: Molding Department, $17,600; and Firing Department, $5,600. Manufacturing overhead was applied: Molding Department, $25,700; and Firing Department, $35,700. Unfired, molded bricks were transferred from the Molding Department to the Firing Department. According to the company’s process costing system, the cost of the unfired, molded...
Suppose someone throws a rock straight down from the roof of wtimer Hall. If the magitude...
Suppose someone throws a rock straight down from the roof of wtimer Hall. If the magitude of the inital downward velocity of the rock was 12 m/s, and the height from which it was thrown was 12 m.How long would it take the rock to hit the ground? The correct answer is .762 seconds, however I'm not sure how to get there. What formula do you use? Thanks and please explain steps clearly.
A physics book was thrown from the top of a library with a speed of 8.0...
A physics book was thrown from the top of a library with a speed of 8.0 m/s at angle 60o with the horizontal. After 5 seconds, the book hits the ground: (a) Find the height of the library above the ground. (b) Find the distance of the point where the book falls on the ground from the base of the library. (c) Just before the book hits the ground, find the horizontal and vertical components of its velocity.
A physics professor lives on the top floor of a 4 story apartment building. the apartment...
A physics professor lives on the top floor of a 4 story apartment building. the apartment is 20 meters above the ground level. The professor's bathtub faucet has an area of 10 cm2. The building is fed by a water pipe that has a cross-sectional area of 100cm2. Use g=10m/s2, and the atmospheric pressure is 100000pa. Note that 1L=1000cm3, and the density of the water is 1000kg/m3. 1. the flow rate Q of the tub is 18L per minute. calculate...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT