Homework Answers
Option c is correct. At highest point of the projectile , velocity is horizontal whereas acceleration is vertical. So its perpendicular.
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direction? 10. A baseball is thrown from the outfield toward the catcher. When the ball reaches...
Can someone answer question 10 for me please. ? 9. A projectile is launched at some...
Can someone answer question 10 for me please. ?
9. A projectile is launched at some angle to the horizontal with ong the perpen- some initial speed w; air resistance is negligible. (a) Is the pro- jectile a freely falling body? (b) What is its acceleration in the vertical direction? (c) What is its acceleration in the horizontal direction? ccelera- suming projec 10. A baseball is thrown from the outfield toward the catcher. When the ball reaches its highest point,...
A ball is thrown straight up in the air. When the ball reaches its highest point,...
A ball is thrown straight up in the air. When the ball reaches its highest point, which of the following is true? 1.It is in equilibrium. 2.It has zero acceleration. 3.It has an increasing acceleration. 4.It has zero velocity.
A ball is thrown with a speed of 20 m/s at an angle of 37# above...
A ball is thrown with a speed of 20 m/s at an angle of 37# above the horizontal (neglect air resistance). Which of the following is true: A. at the highest point its acceleration is zero. B. the velocity of the object is zero at the point of maximal elevation. C. the velocity in the horizontal direction is constant. D. the acceleration depends on the mass of the object.
2. A baseball thrown from the outfield, a golf ball, or a thrown football, all will follow a trajectory (path) that has horizontal as well as vertical displacement components. If we neglect the a...
2. A baseball thrown from the outfield, a golf ball, or a thrown football, all will follow a trajectory (path) that has horizontal as well as vertical displacement components. If we neglect the air friction on the ball, the path will be a perfect parabolic trajectory. The equations for the displacement of the ball are: Take gravity g as 9.81 meters per second, and the initial velocity, Vo, equal to 35 meters/second. Use Excel to show the ball trajectory for...
3. A ball is thrown straight up, reaches a maximum height, then falls to its initial...
3. A ball is thrown straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and the acceleration as the ball is coming down. (1 mark) a) Both its velocity and its acceleration point upward b) Its velocity points downwards and its acceleration points upwards c) Its velocity points upwards and its acceleration points downwards d) Both its velocity and its acceleration point downwards. 4. A man stands on...
Problem 4 the bounced ball before the bounce. An outfielder throws a baseball to his catcher...
Problem 4 the bounced ball before the bounce. An outfielder throws a baseball to his catcher in an attempt to throw out a runner at home plate. The ball bounces once before reaching the catcher. Assume the angle at which shown in the figure below, but that the ball's speed after the bounce is one-half of what is was (a) Assume the ball is always thrown with the same initial speed and ignore air l leaves the ground is the...
Explore A baseball is thrown from the top of a tall building with an initial velocity...
Explore A baseball is thrown from the top of a tall building with an initial velocity of 10 m/s from a height of h= 11.5 m above the ground. Find its speed when it reaches the ground (a) if its launch angle is 37°, and (b) if it is launched horizontally. Conceptualize As the baseball moves upward and to the right, the force of gravity accelerates it downward. The vertical component of its velocity decreases in magnitude until the baseball...
A baseball is hit upward and travels along a parabolic arc before it strikes the ground....
A baseball is hit upward and travels along a parabolic arc before it strikes the ground. Which one of the following statements is necessarily true? The velocity of the ball is a maximum when the ball is at the highest point in the arc. The velocity of the ball is zero m/s when the ball is at the highest point in the arc. The x-component of the velocity of the ball is the same throughout the ball's fight. The acceleration...
Two throw A blue ball is thrown upward with an initial speed of 22.2 m/s, from...
Two throw
A blue ball is thrown upward with an initial speed of 22.2 m/s, from a height of 0.8 meters above the ground. 2.7 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 9.2 m/s from a height of 27.8 meters above the ground. The force of grandly due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s^2. What is the speed of...
13. A baseball catcher puts on an exhibition by catching a 0.15-kg ball dropped from a...
13. A baseball catcher puts on an exhibition by catching a 0.15-kg ball dropped from a helicopter at a height of 101 m. What is the speed of the ball just before it hits the catcher's glove 1.0 m above the ground? (g = 9.8 m/s and ignore air resistance) a. 44 m/s b. 38 m/s c. 31 m/s d. 22 m/s 14. A hill is 100 m long and makes an angle of 12° with the horizontal. As a...
Can someone answer question 10 for me please. ?
9. A projectile is launched at some angle to the horizontal with ong the perpen- some initial speed w; air resistance is negligible. (a) Is the pro- jectile a freely falling body? (b) What is its acceleration in the vertical direction? (c) What is its acceleration in the horizontal direction? ccelera- suming projec 10. A baseball is thrown from the outfield toward the catcher. When the ball reaches its highest point,...
2. A baseball thrown from the outfield, a golf ball, or a thrown football, all will follow a trajectory (path) that has horizontal as well as vertical displacement components. If we neglect the air friction on the ball, the path will be a perfect parabolic trajectory. The equations for the displacement of the ball are: Take gravity g as 9.81 meters per second, and the initial velocity, Vo, equal to 35 meters/second. Use Excel to show the ball trajectory for...
3. A ball is thrown straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and the acceleration as the ball is coming down. (1 mark) a) Both its velocity and its acceleration point upward b) Its velocity points downwards and its acceleration points upwards c) Its velocity points upwards and its acceleration points downwards d) Both its velocity and its acceleration point downwards. 4. A man stands on...
Problem 4 the bounced ball before the bounce. An outfielder throws a baseball to his catcher in an attempt to throw out a runner at home plate. The ball bounces once before reaching the catcher. Assume the angle at which shown in the figure below, but that the ball's speed after the bounce is one-half of what is was (a) Assume the ball is always thrown with the same initial speed and ignore air l leaves the ground is the...
A baseball is hit upward and travels along a parabolic arc before it strikes the ground. Which one of the following statements is necessarily true? The velocity of the ball is a maximum when the ball is at the highest point in the arc. The velocity of the ball is zero m/s when the ball is at the highest point in the arc. The x-component of the velocity of the ball is the same throughout the ball's fight. The acceleration...
Two throw
A blue ball is thrown upward with an initial speed of 22.2 m/s, from a height of 0.8 meters above the ground. 2.7 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 9.2 m/s from a height of 27.8 meters above the ground. The force of grandly due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s^2. What is the speed of...
13. A baseball catcher puts on an exhibition by catching a 0.15-kg ball dropped from a helicopter at a height of 101 m. What is the speed of the ball just before it hits the catcher's glove 1.0 m above the ground? (g = 9.8 m/s and ignore air resistance) a. 44 m/s b. 38 m/s c. 31 m/s d. 22 m/s 14. A hill is 100 m long and makes an angle of 12° with the horizontal. As a...
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