Homework Answers
Here, Time of travel t = sqrt(2s/g) = sqrt(2*(5-3.5)/32.2) = 0.3052 s
v0 = 40ft/0.3052s = 131 ft/s answer
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40 ft CL 5 ft A baseball pitching machine "throws" baseballs with a horizontal velocity V.....
An automatic pitching machine throws a baseball 15 degrees above horizontal with a speed of 32m/s....
An automatic pitching machine throws a baseball 15 degrees above horizontal with a speed of 32m/s. What is the ball's horizontal velocity?
A pitching machine is programmed to pitch baseballs horizontally at a speed of 87 mph. The...
A pitching machine is programmed to pitch baseballs horizontally at a speed of 87 mph. The machine is mounted on a truck and aimed backward. As the truck drives away from you at a speed of 45 mph, the machine shoots a ball toward you.For each of the object pairings listed below, determine the correct relative speed. The speed of the pitching machine relative to the truck The speed of the pitched ball relative to the truck The speed of...
roblem 1 angle of 40o The pitching machine is adjusted so that the baseball is launched...
roblem 1 angle of 40o The pitching machine is adjusted so that the baseball is launched with a speed of vA- 30 m/s at an initial (a) Determine the time it takes for the ball to strike the ground at B (b) Determine the velocity of the baseball whenit strikes the ground at B. [Hint: Determine its horizontal and vertical velocity components first.] (c) Determine the distance R between the pitching machine and point B 30 m/s A 40° 1.2...
Vi = 8 ft/s 3 ft The girl throws the ball with a horizontal velocity of...
Vi = 8 ft/s 3 ft The girl throws the ball with a horizontal velocity of v, = 8 ft/s. If the coefficient of restitution between the ball and the ground is e = 0.8. determine the velocity of the ball just after it rebounds from the ground and the maximum height to which the ball rises after the first bounce.
13. (40 pts) A baseball promoter mounts a baseball launcher on a car that launches baseballs...
13. (40 pts) A baseball promoter mounts a baseball launcher on a car that launches baseballs at a muzzl velocity of 40 m/s. While the car is travelling forward at 15 mph the baseball launcher is shot at an angle 25° above horizontal in the direction of the car's motion. The ball leaves the launcher 7 ft above the ground. Assume no air resistance. A. Find the time, tr, when the baseball hits the ground after being launched. 8. Find...
17. A baseball was launched from a pitching machine that was placed on a platform The...
17. A baseball was launched from a pitching machine that was placed on a platform The height of the ball in feet, h, is given by the equation h-16t2 +85t+9, where t is the time in seconds since the ball was launched. What is the meaning of the term 85t? The platform was 85 feet high. The ball was launched with an initial upward velocity of 85 feet per second The ball was launched with an initial upward velocity of...
Six baseball throws are shown below. In each case, the ball is thrown with speed v at an angle θ from the horizontal
Projectile Motion Ranking TaskSix baseball throws are shown below. In each case, the ball is thrown with speed v at an angle θ from the horizontal. In all cases, the baseball is thrown from the same height H above the ground. Assume for the basis of these rankings that the effects of air resistance are negligible.Part ARank these throws based on the maximum height reached by the ball.Rank from largest to smallest. To rank items as equivalent, overlap them.Part BThis...
The girl throws the ball with a horizontal velocity of v1=8ft/s. Part A If the coefficient...
The girl throws the ball with a horizontal velocity of v1=8ft/s.
Part A
If the coefficient of restitution between the ball and the
ground is 0.8, determine the magnitude of the velocity of the ball
just after it rebounds from the ground.
Express your answer with the appropriate units.
v2 =
Part B
Determine the direction of the velocity of the ball just after
it rebounds from the ground.
Express your answer with the appropriate units.
? =
Part C...
A baseball pitcher throws a ball at 92.0 mi/h in the horizontal direction
7. A baseball pitcher throws a ball at 92.0 mi/h in the horizontal direction. How far does the ball fall vertically by the time it reaches home plate, which is a horizontal distance of 60.5 ft away? (Express your answer in units of feet. Neglect air resistance.) 8.A panther jumps to a height of 2.50 m when leaving the ground at an angle of 41.9º. What is its initial speed (in m/s) as it leaves the ground? 9.A bowling ball is launched from...
Question 9 5 pts A 0.25 lbf baseball is pitched with a velocity of 80 ft/s...
Question 9 5 pts A 0.25 lbf baseball is pitched with a velocity of 80 ft/s toward a batter. After the ball is hit by the bat B, it has a velocity of 120 ft/s in the direction shown. If the ball and bat are in contact for 0.015 seconds, determine the average impulsive force exerted on the ball (in lbf) during impact. a 120 ft/s 40° B 80 ft/s
A pitching machine is programmed to pitch baseballs horizontally at a speed of 87 mph. The machine is mounted on a truck and aimed backward. As the truck drives away from you at a speed of 45 mph, the machine shoots a ball toward you.For each of the object pairings listed below, determine the correct relative speed. The speed of the pitching machine relative to the truck The speed of the pitched ball relative to the truck The speed of...
roblem 1 angle of 40o The pitching machine is adjusted so that the baseball is launched with a speed of vA- 30 m/s at an initial (a) Determine the time it takes for the ball to strike the ground at B (b) Determine the velocity of the baseball whenit strikes the ground at B. [Hint: Determine its horizontal and vertical velocity components first.] (c) Determine the distance R between the pitching machine and point B 30 m/s A 40° 1.2...
Vi = 8 ft/s 3 ft The girl throws the ball with a horizontal velocity of v, = 8 ft/s. If the coefficient of restitution between the ball and the ground is e = 0.8. determine the velocity of the ball just after it rebounds from the ground and the maximum height to which the ball rises after the first bounce.
13. (40 pts) A baseball promoter mounts a baseball launcher on a car that launches baseballs at a muzzl velocity of 40 m/s. While the car is travelling forward at 15 mph the baseball launcher is shot at an angle 25° above horizontal in the direction of the car's motion. The ball leaves the launcher 7 ft above the ground. Assume no air resistance. A. Find the time, tr, when the baseball hits the ground after being launched. 8. Find...
17. A baseball was launched from a pitching machine that was placed on a platform The height of the ball in feet, h, is given by the equation h-16t2 +85t+9, where t is the time in seconds since the ball was launched. What is the meaning of the term 85t? The platform was 85 feet high. The ball was launched with an initial upward velocity of 85 feet per second The ball was launched with an initial upward velocity of...
The girl throws the ball with a horizontal velocity of v1=8ft/s.
Part A
If the coefficient of restitution between the ball and the
ground is 0.8, determine the magnitude of the velocity of the ball
just after it rebounds from the ground.
Express your answer with the appropriate units.
v2 =
Part B
Determine the direction of the velocity of the ball just after
it rebounds from the ground.
Express your answer with the appropriate units.
? =
Part C...
Question 9 5 pts A 0.25 lbf baseball is pitched with a velocity of 80 ft/s toward a batter. After the ball is hit by the bat B, it has a velocity of 120 ft/s in the direction shown. If the ball and bat are in contact for 0.015 seconds, determine the average impulsive force exerted on the ball (in lbf) during impact. a 120 ft/s 40° B 80 ft/s
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