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9. (12pts) A straight emergency chute for an airplane is 18.0 ft long. In being tested,...
A regulation volleyball court is L = 18.0 m long and a regulation volleyball net is...
A regulation volleyball court is L = 18.0 m long and a regulation volleyball net is d = 2.43 m high. A volleyball player strikes the ball a height h = 1.83 m directly above the back line, and the ball's initial velocity makes an angle of 43 deg. with respect to the ground. I solved initial speed = 9.76 m/s and max height reached by the ball in this case to be 4.09 m. C) At what initial speed...
A 99 g ball is tied to the end of a 49 cm long string and...
A 99 g ball is tied to the end of a 49 cm long string and swung clockwise in a vertical circle. The center of the circle is 175 cm above the floor. What is the minimum speed necessary to make it over the top without the string going slack? The ball is being swung at this minimum speed, but then the string is released at the instant the ball is at the top of the loop. How far to...
A football quarterback is moving straight backward at a speed of 3.9 m/s when he throws...
A football quarterback is moving straight backward at a speed of 3.9 m/s when he throws a pass to a player 15m (10%) Problem 9: straight downfield 33% Part (a) If the ball is thrown at an angle of 25. relative to the ground and is caught at the same height as it is released, what is its initial speed relative to the ground in m/s? її 33% Part (b) How long does it take to get to the receiver...
5. A car starting from rest moves in a straight line with a constant acceleration of...
5. A car starting from rest moves in a straight line with a constant acceleration of 2.20 m/s? for 14.0 s, then slows down to a stop with a deceleration of 2.90 m/s2. How far does it travel? constant meters 6. Two cars are traveling along a straight road. Car (A) maintains a constant speed of 890 kmh; car (B) maintains a constant speed of 115 km/h. Att o, car (B) is 39.0 km behind car A. How far will...
1. A projectile is fired straight upward at 170 m/s near the surface of Planet X,...
1. A projectile is fired straight upward at 170 m/s near the surface of Planet X, which has no atmosphere and where the acceleration due to gravity is g = 5 m/s2. (a) What is the acceleration of the projectile halfway to the top of its trajectory? [1] (b) Is the projectile in equilibrium at the top of its trajectory? Explain. [1.5] (c) How fast is it moving at the instant it reaches the top of its trajectory? (0.5] (d)...
Can someone please work these step-by-step. I have the answers but needing to know how to...
Can someone please work these step-by-step. I have the
answers but needing to know how to work them.
5. A hammer is dropped from the top of a tower that is 400 m high. If we neglect air resistance so that the only force on the hammer is gravity, with what velocity does the hammer strike the ground? 6. A cowboy shoots a bullet straight up into the air with an initial speed of 800 m/s. If the bullet is...
Homework 9 Name Hour 1.) A cat stretches and knocks a pen horizontally off a 1.1...
Homework 9 Name Hour 1.) A cat stretches and knocks a pen horizontally off a 1.1 m tall desk. If the pen ands 35 cm from the edge of the desk: a.) How long does it take the pen to hit the ground? b.) What horizontal velocity does the cat push the pen with? s and ently tacce the p 2.) You run and jump off a short cliff into a lake. If you jump with a velocity of 4...
1) [7 marks] A long straight wire hangs vertically through the middle of a metal basketball...
1) [7 marks] A long straight wire hangs vertically through the middle of a metal basketball hoop of radius R = 23.0 cm. The hoop is horizontal. The wire carries a current of I = 1.56 A, moving vertically upward from the ground toward the sky. a) Sketch the magnetic field inside the hoop, as viewed from above it. b) What is the magnitude of the magnetic field at the hoop's location? c) Is there a net magnetic flux through...
1. A figure skater glides along a circular path of radius 5.28m. (a) If she coasts...
1. A figure skater glides along a circular path of radius
5.28m.
(a) If she coasts around one half of the circle, find the
magnitude of the displacement vector. (SI unit: m)
(b) If she coasts around one half of the circle, find what
distance she skated. (SI unit: m)
(c) What is the magnitude of the displacement if she skates all
the way around the circle? (SI unit:m)
2. A novice golfer on the green takes three strokes to...
1. An airplane if flying horizontally at a constant height of 6 km above a fixed observation poin...
1. An airplane if flying horizontally at a constant height of 6 km above a fixed observation point. At a certain moment the angle of elevation θ is 30° and decreasing and the speed of the plane is 4 km/h. (a) How fast is 0 decreasing at this moment? (b) How fast is the distance between the plane and the observation point is changing at this moment? 2. Trajectory of a particle is described by parametrical equations as t,y P,...
A football quarterback is moving straight backward at a speed of 3.9 m/s when he throws a pass to a player 15m (10%) Problem 9: straight downfield 33% Part (a) If the ball is thrown at an angle of 25. relative to the ground and is caught at the same height as it is released, what is its initial speed relative to the ground in m/s? її 33% Part (b) How long does it take to get to the receiver...
5. A car starting from rest moves in a straight line with a constant acceleration of 2.20 m/s? for 14.0 s, then slows down to a stop with a deceleration of 2.90 m/s2. How far does it travel? constant meters 6. Two cars are traveling along a straight road. Car (A) maintains a constant speed of 890 kmh; car (B) maintains a constant speed of 115 km/h. Att o, car (B) is 39.0 km behind car A. How far will...
1. A projectile is fired straight upward at 170 m/s near the surface of Planet X, which has no atmosphere and where the acceleration due to gravity is g = 5 m/s2. (a) What is the acceleration of the projectile halfway to the top of its trajectory? [1] (b) Is the projectile in equilibrium at the top of its trajectory? Explain. [1.5] (c) How fast is it moving at the instant it reaches the top of its trajectory? (0.5] (d)...
Can someone please work these step-by-step. I have the
answers but needing to know how to work them.
5. A hammer is dropped from the top of a tower that is 400 m high. If we neglect air resistance so that the only force on the hammer is gravity, with what velocity does the hammer strike the ground? 6. A cowboy shoots a bullet straight up into the air with an initial speed of 800 m/s. If the bullet is...
Homework 9 Name Hour 1.) A cat stretches and knocks a pen horizontally off a 1.1 m tall desk. If the pen ands 35 cm from the edge of the desk: a.) How long does it take the pen to hit the ground? b.) What horizontal velocity does the cat push the pen with? s and ently tacce the p 2.) You run and jump off a short cliff into a lake. If you jump with a velocity of 4...
1) [7 marks] A long straight wire hangs vertically through the middle of a metal basketball hoop of radius R = 23.0 cm. The hoop is horizontal. The wire carries a current of I = 1.56 A, moving vertically upward from the ground toward the sky. a) Sketch the magnetic field inside the hoop, as viewed from above it. b) What is the magnitude of the magnetic field at the hoop's location? c) Is there a net magnetic flux through...
1. A figure skater glides along a circular path of radius
5.28m.
(a) If she coasts around one half of the circle, find the
magnitude of the displacement vector. (SI unit: m)
(b) If she coasts around one half of the circle, find what
distance she skated. (SI unit: m)
(c) What is the magnitude of the displacement if she skates all
the way around the circle? (SI unit:m)
2. A novice golfer on the green takes three strokes to...
1. An airplane if flying horizontally at a constant height of 6 km above a fixed observation point. At a certain moment the angle of elevation θ is 30° and decreasing and the speed of the plane is 4 km/h. (a) How fast is 0 decreasing at this moment? (b) How fast is the distance between the plane and the observation point is changing at this moment? 2. Trajectory of a particle is described by parametrical equations as t,y P,...
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