A ball enters a frictionless track spiraling upward with a speed vo. The radius of the...
A ball enters a frictionless track spiraling upward with a speed vo. The radius of the track is half a meter and it has a pitch (ѳ) of 15°. (a) If the initial speed of the ball is 12 m/s, how high vertically will it rise? (b) Compare your answer to part (a) with the height the ball would rise if it had been thrown vertically upward, into freefall, with the same initial speed. Explain your results. (c) If you wish the ball to make exactly 5 revolutions before momentarily coming to rest, how fast must it initially be moving when entering the spiral track? (d) What assumptions or simplifications did you make in part (c) about the total distance traveled that leaves your answer very close but not exact (friction is not the answer)? Use Related Quantities in conjunction with Order of Magnitude sense-making to justify your assumptions/simplifications.
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A ball enters a frictionless track spiraling upward with a speed
vo. The radius of the...
You throw a ball straight upward. Part A Compared with its initial speed when thrown, how...
You throw a ball straight upward. Part A Compared with its initial speed when thrown, how fast does it return to its starting point? Answer this for the case of no air resistance. The ball returns much faster than it was thrown. The ball returns slower than it was thrown. The ball returns as fast as it was thrown. Part B Answer this for the case where air resistance does affect motion. The ball returns as fast as it was...
You throw a ball vertically upward with an initial speed of 5 m/s from your dorm...
You throw a ball vertically upward with an initial speed
of 5 m/s from your dorm window...
QUESTION 6 5 p You throw a ball vertically upward with an initial speed of 5 m/s from your dorm window. If the window is 10 m above the ground, find the time the ball is in flight. Give your answer with three significant figures and do not write the units. 5 p. QUESTION 7 Continuing with exercise 6, calculate the speed of...
A physic student sets out to experiment on the effect of drag forces on a ball...
A physic student sets out to experiment on the effect of drag forces on a ball of mass m by giving the ball an initial velocity nu_0 upwards and then downwards as describe below. In both cases, the ball experiences a force of air resistance whose magnitude is given by F = -k nu Where k is a positive constant. The positive direction for all vector quantities is taken to be upwards. Express all algebraic answers in terms of m....
You throw a ball vertically upward, and as it leaves your hand, its speed is 16.0...
You throw a ball vertically upward, and as it leaves your hand, its speed is 16.0 m/s. (a) How high (in m) does it rise above the level where it leaves your hand? ? m (b) How long (in s) does it take to reach its highest point? ? s (c) How long (in s) does the ball take to return to the level where it left your hand after it reaches its highest point? ? s (d) Assume that...
Free-fall notion 1. A ball is thrown vertically upward at an initial speed of 49 m/s....
Free-fall notion 1. A ball is thrown vertically upward at an initial speed of 49 m/s. Assume that the ball leaves the hand when it is 15 m above the ground (about the height of Kirkbride), and that the effects of air resistance can be ignored. Choose your landmark to be the ground; then at t -0, yo- +15 m, Vyo +49 m/s a. 5 pts) How fast is the launch speed in mph? Do you think this is a...
PRACTICE IT Use the worked example above to help you solve this problem. A ball is thrown upward from the top of a building at an angle of 30.00 to the horizontal and with an initial speed of 1...
PRACTICE IT Use the worked example above to help you solve this problem. A ball is thrown upward from the top of a building at an angle of 30.00 to the horizontal and with an initial speed of 19.0 m/s. The point of release is h = 46.0 m above the ground. (a) How long does it take for the ball to hit the ground? 4.183 (b) Find the ball's speed at impact. 35.532 m/s (c) Find the horizontal range...
1. A ball is thrown horizontally from the roof of a building 9.4m tall and lands...
1. A ball is thrown horizontally from the roof of a building 9.4m tall and lands 9.7m from the base. What was the balls initial speed? 2. You buy a plastic dart gun, and being a clever physics student you decide to do a quick calculation to find its maximum horizontal range. You shoot the gun straight up, and it takes 3.6s for the dart to land back at the barrel. What is the maximum horizontal range of your gun?...
Projectile A is fired at a speed Vo at an angle 0 above horizontal as shown...
Projectile A is fired at a speed Vo at an angle 0 above horizontal as shown and projectile B is fired at the sar but at a speed of 2%. Use this for Questions #1-7. angle Draw the initial velocity vectors for both projectile A and projectile B. Remember that the length of your arrows is important. 1. 2. Compare the initial horizorntal and vertical velocities of projectiles A and B. Be specific. Explain your answers. 3. Compare the horizontal...
1. Which has the greater density? Explain your answer. a) a cubic centimeter block of lead...
1. Which has the greater density? Explain your answer. a) a cubic centimeter block of lead c) a cubic centimeter block of wood b) a cubic meter block of lead d) a cubic meter block of wood 2. Where do you need to put 40 kg to balance 70 kg that is located 50 cm from the pivot point? Assume the center of mass of what is holding the masses is located at the pivot point. 3. A can of...
Please answer the following physic questions. Thank you! 1. A dog sees a flowerpot sail up...
Please answer the following physic questions. Thank you! 1. A dog sees a flowerpot sail up and then back past a window 5.0 ft high. If the total time the pot is in sight is 1.0 seconds, find the height above the window that the pot rises. 2. An elevator ascends with an upward acceleration of 4.0 ft/s2. At the instant its upward speed is 8.0 ft/s, a loose bolt drops from the ceiling of the elevator 9.0 ft from...
You throw a ball vertically upward with an initial speed
of 5 m/s from your dorm window...
QUESTION 6 5 p You throw a ball vertically upward with an initial speed of 5 m/s from your dorm window. If the window is 10 m above the ground, find the time the ball is in flight. Give your answer with three significant figures and do not write the units. 5 p. QUESTION 7 Continuing with exercise 6, calculate the speed of...
A physic student sets out to experiment on the effect of drag forces on a ball of mass m by giving the ball an initial velocity nu_0 upwards and then downwards as describe below. In both cases, the ball experiences a force of air resistance whose magnitude is given by F = -k nu Where k is a positive constant. The positive direction for all vector quantities is taken to be upwards. Express all algebraic answers in terms of m....
Free-fall notion 1. A ball is thrown vertically upward at an initial speed of 49 m/s. Assume that the ball leaves the hand when it is 15 m above the ground (about the height of Kirkbride), and that the effects of air resistance can be ignored. Choose your landmark to be the ground; then at t -0, yo- +15 m, Vyo +49 m/s a. 5 pts) How fast is the launch speed in mph? Do you think this is a...
PRACTICE IT Use the worked example above to help you solve this problem. A ball is thrown upward from the top of a building at an angle of 30.00 to the horizontal and with an initial speed of 19.0 m/s. The point of release is h = 46.0 m above the ground. (a) How long does it take for the ball to hit the ground? 4.183 (b) Find the ball's speed at impact. 35.532 m/s (c) Find the horizontal range...
Projectile A is fired at a speed Vo at an angle 0 above horizontal as shown and projectile B is fired at the sar but at a speed of 2%. Use this for Questions #1-7. angle Draw the initial velocity vectors for both projectile A and projectile B. Remember that the length of your arrows is important. 1. 2. Compare the initial horizorntal and vertical velocities of projectiles A and B. Be specific. Explain your answers. 3. Compare the horizontal...
1. Which has the greater density? Explain your answer. a) a cubic centimeter block of lead c) a cubic centimeter block of wood b) a cubic meter block of lead d) a cubic meter block of wood 2. Where do you need to put 40 kg to balance 70 kg that is located 50 cm from the pivot point? Assume the center of mass of what is holding the masses is located at the pivot point. 3. A can of...
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