Homework Answers
Two rocks are thrown from the top of a very tall tower. One of them is thrown vertically up with an initial velocity of...
Two rocks are thrown from the top of a very tall tower. One of them is thrown vertically up with an initial velocity of Vup=19.7 m/s. The other rock is thrown horizontally to the right with an initial velocity of Vright 12.7 m/s. (See figure.) How far will the rocks be from each other after 2.76 s? (Neglect air resistance and assume that the rocks will not hit the ground or the tower.)
Two rocks are thrown from the top of a very tall tower. One of them is...
Two rocks are thrown from the top of a very tall tower. One of them is thrown vertically up with an initial velocity of Vup -15.6 m/s. The other rock is thrown horizontally to the right with an initial velocity of Vright -10.3 m/s. (See figure.) V. up V. right How far will the rocks be from each other after 4.11 s? (Neglect air resistance and assume that the rocks will not hit the ground or the tower.) Subt Ane...
At time t = 0 s, a rock is thrown vertically upward from the ground. At...
At time t = 0 s, a rock is thrown vertically upward from the ground. At time t = 1.6 s, it passes the top of a tall tower. 0.80 s later, it reaches its maximum height. Q)How fast is the rock moving as it passes the top of the tower? A car moving with constant acceleration covers the distance between two points 120 m apart in a time of 8.0 s. Its speed at the second point is 12...
6. The tower of Pisa is 54.5 m tall. Assuming that Galileo dropped his object from...
6. The tower of Pisa is 54.5 m tall. Assuming that Galileo dropped his object from rest from the top of the tower and that the effects of air resistance were negligible, how long would it take the object to fall, in seconds? What is the velocity of the object when it hits the ground? 7. A ball is thrown directly downward with an initial speed of 9.50 m/s from a height of 30.0 m. After what time interval does...
A rock is dropped from the top of a vertical cliff and takes 3.00 s to...
A rock is dropped from the top of a vertical cliff and takes 3.00 s to reach the ground below the cliff. A secon rock is thrown vertically from the cliff, and it takes this rock 2.00 s to reach the ground below the cliff from the time it is released. With what velocity was the second rock thrown, assuming no air resistance? Select one: a. 5.51 m/s downward , b. 4.76 m/s downward X O c. 12.3 m/s downward...
1. Bowling Ball A is dropped from a point halfway up a cliff. A second identical...
1. Bowling Ball A is dropped from a point halfway up a cliff. A second identical bowling ball, B, is dropped simultaneously from the top of the cliff. Comparing the bowling balls at the instant they reach the ground, which of the following are correct? Neglect air resistance. (A) Ball A has half the kinetic energy and takes half the time to hit the ground as Ball B. (B) Ball A has half the kinetic energy and takes one-fourth the...
A ball is dropped from rest from the top of a building. Two motion detectors which...
A ball is dropped from rest from the top of a building. Two motion detectors which are positioned outside of two different windows, one above the other, record the velocities of -15.5 m/s and -17.2 m/s as the ball goes past them. (no air resistance) a. How far apart are the motion sensors mounted? b. How far from the top motion sensor is the top of the building where the ball was released? c. If the second motion sensor can...
A car traveling at 35 mi/h crashes into a tree. The front end of the car...
A car traveling at 35 mi/h crashes into a tree. The front end of the car compresses and the driver comes to rest after traveling 0.75 m. What was the magnitude of the average acceleration of the driver during the collision? Express your answer in terms of "gs", where 1g 9.80 m/s. Determine the time interval of the collision, in milliseconds. 6. The tower of Pisa is 54.5 m tall. Assuming that Galileo dropped his object from rest from the...
A heavy rock and a light rock of the same size are falling through the air...
A heavy rock and a light rock of the same size are falling through the air from a tall building. The one that encounters the greatest air resistance is the A) heavy rock. B) same for both C) light rock. A 10-N filling object encounters 4 N of air resistance. The net force on the object is. A) 4 N. B) 10 N. C) 0 N. D) 6 N. E)none of the above Suzie Skydiver, who weighs 500 N, reaches...
Just c please. The answer for b is 39.6 m/s P11 A rock is dropped from...
Just c please. The answer for b
is 39.6 m/s
P11 A rock is dropped from a cliff of height 80 m into the ocean. Disregard air resistance. Once it hits the water, the rock's acceleration is a -1.5 s1 v, where v is the rock's velocity. a) b) c) How long does it take to hit the water? What is its velocity when it hits the water? Find、(1), the time dependence of the rock's velocity inside the water.
Two rocks are thrown from the top of a very tall tower. One of them is thrown vertically up with an initial velocity of Vup -15.6 m/s. The other rock is thrown horizontally to the right with an initial velocity of Vright -10.3 m/s. (See figure.) V. up V. right How far will the rocks be from each other after 4.11 s? (Neglect air resistance and assume that the rocks will not hit the ground or the tower.) Subt Ane...
A rock is dropped from the top of a vertical cliff and takes 3.00 s to reach the ground below the cliff. A secon rock is thrown vertically from the cliff, and it takes this rock 2.00 s to reach the ground below the cliff from the time it is released. With what velocity was the second rock thrown, assuming no air resistance? Select one: a. 5.51 m/s downward , b. 4.76 m/s downward X O c. 12.3 m/s downward...
1. Bowling Ball A is dropped from a point halfway up a cliff. A second identical bowling ball, B, is dropped simultaneously from the top of the cliff. Comparing the bowling balls at the instant they reach the ground, which of the following are correct? Neglect air resistance. (A) Ball A has half the kinetic energy and takes half the time to hit the ground as Ball B. (B) Ball A has half the kinetic energy and takes one-fourth the...
A ball is dropped from rest from the top of a building. Two motion detectors which are positioned outside of two different windows, one above the other, record the velocities of -15.5 m/s and -17.2 m/s as the ball goes past them. (no air resistance) a. How far apart are the motion sensors mounted? b. How far from the top motion sensor is the top of the building where the ball was released? c. If the second motion sensor can...
A car traveling at 35 mi/h crashes into a tree. The front end of the car compresses and the driver comes to rest after traveling 0.75 m. What was the magnitude of the average acceleration of the driver during the collision? Express your answer in terms of "gs", where 1g 9.80 m/s. Determine the time interval of the collision, in milliseconds. 6. The tower of Pisa is 54.5 m tall. Assuming that Galileo dropped his object from rest from the...
A heavy rock and a light rock of the same size are falling through the air from a tall building. The one that encounters the greatest air resistance is the A) heavy rock. B) same for both C) light rock. A 10-N filling object encounters 4 N of air resistance. The net force on the object is. A) 4 N. B) 10 N. C) 0 N. D) 6 N. E)none of the above Suzie Skydiver, who weighs 500 N, reaches...
Just c please. The answer for b
is 39.6 m/s
P11 A rock is dropped from a cliff of height 80 m into the ocean. Disregard air resistance. Once it hits the water, the rock's acceleration is a -1.5 s1 v, where v is the rock's velocity. a) b) c) How long does it take to hit the water? What is its velocity when it hits the water? Find、(1), the time dependence of the rock's velocity inside the water.
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