1. A rock is dropped from a bridge that is 15 m above the surface of...
1. A rock is dropped from a bridge that is 15 m above the surface of the river. How long does it take for the rock to hit the water?
2. A ball is thrown upward from the edge of the roof of a 20 m tall building with an initial velocity of 15 m/s. a) What is the maximum height reached by the ball? b) How much time does it take for the ball to reach the ground? c) How fast is the ball going when it hits the ground?
3. A cat leaps from the floor up to a counter top 1.2 m above the floor. What was the minimum initial velocity of the cat?
Homework Answers
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1. A rock is dropped from a bridge that is 15 m above the
surface of...
A rock is dropped from a height of 110 meters above the ground. One second later,...
A rock is dropped from a height of 110 meters above the ground. One second later, a ball is thrown vertically downward from the same height with an initial speed of 14 m/s. A. At what time after the ball if thrown are the two objects at the same height above the ground? B. What is the speed of the rock when the ball hits the ground?
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 3.00 kg ball is dropped from the roof of a building 176.4 m high
A 3.00 kg ball is dropped from the roof of a building 176.4 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 12.0 N on it. a.)How far from the building does the ball hit the ground? b.)How long does it take to hit the ground? c.)What is its speed when it hits the ground?
A rock is thrown down with an initial speed of 15.0 m/s from the roof of...
A rock is thrown down with an initial speed of 15.0 m/s from the roof of a building to the street below. It takes 3.30 s for the rock to hit the street. (a) Find the speed of the rock as it hits the street. (b) How tall is the building?
Answer: 10.12 A key is dropped from a bridge that is 40.0 m bove the water....
Answer: 10.12 A key is dropped from a bridge that is 40.0 m bove the water. At the moment the key is released a model boat is 10.5 m away from the bridge and moving towards the bridge with constant velocity. If the key falls directly into the model boat, calculate the Velocity of the boat. Answer: 11. [2pt] Arie is aimed honuntaily a target located 345 m away. The ballet hits the target 25 cm below the aim point....
A ball is thrown vertically upward with a velocity of 15 m/s from the roof of...
A ball is thrown vertically upward with a velocity of 15 m/s from the roof of building that is 22 m high. How long does it take to hit the ground below? How fast was it going when it hit?
(a) A ball is dropped from rest from an initial height h above the floor. It...
(a) A ball is dropped from rest from an initial height h above the floor. It then bounces several times. Draw graphs the position y(e), velocity v, (e) and acceleration ay () of the ball for two complete bounces (hitting the ground t for py Ct) ay (t) (b) If the ball is released from rest at a height h the ground? 1.50 m above the floor, how fast is the ball moving when it reach (c) If the ball...
A rock is at a height of 21.9 m above the ground and is thrown at...
A rock is at a height of 21.9 m above the ground and is thrown at 12.2 degrees below the horizontal. It hits the ground 49.5m horizontal from where it was thrown. A) what is the initial velocity of the rock? B) what is the final velocity of the rock?
A stone is dropped into a river from a bridge 41.2 m above the water. Another...
A stone is dropped into a river from a bridge 41.2 m above the water. Another stone is thrown vertically down 1.35 s after the first is dropped. Both stones strike the water at the same time. What is the initial speed of the second stone?
A stone is dropped into a river from a bridge 47.8 m above the water. Another...
A stone is dropped into a river from a bridge 47.8 m above the water. Another stone is thrown vertically down 1.60 s after the first is dropped. Both stones strike the water at the same time. What is the initial speed of the second stone?
Answer: 10.12 A key is dropped from a bridge that is 40.0 m bove the water. At the moment the key is released a model boat is 10.5 m away from the bridge and moving towards the bridge with constant velocity. If the key falls directly into the model boat, calculate the Velocity of the boat. Answer: 11. [2pt] Arie is aimed honuntaily a target located 345 m away. The ballet hits the target 25 cm below the aim point....
(a) A ball is dropped from rest from an initial height h above the floor. It then bounces several times. Draw graphs the position y(e), velocity v, (e) and acceleration ay () of the ball for two complete bounces (hitting the ground t for py Ct) ay (t) (b) If the ball is released from rest at a height h the ground? 1.50 m above the floor, how fast is the ball moving when it reach (c) If the ball...
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