Which among the following is true about the vertical component of velocity in projectile motion, in which the object leaves at an angle '0' with horizontal as shown in figure? a) Remains constant b) Increases at constant rate till the final position c) Decreases at constant rate till the final position d) First decreases (till maximum height) then increase at constant rate e) First increases (till maximum height) then decrease at constant rate O e

Which among the following is true about the vertical component of velocity in projectile motion, in which the object leaves at an angle '0' with horizontal as shown in figure? a) Remains constant b) Increases at constant rate till the final position c) Decreases at constant rate till the final position d) First decreases (till maximum height) then increase at constant rate e) First increases (till maximum height) then decrease at constant rate O e

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter3: Motion In Two Dimensions

Section: Chapter Questions

Problem 59AP: The determined Wile E. Coyote is out once more to try to capture the elusive roadrunner. The coyote...

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The determined Wile E. Coyote is out once more to try to capture the elusive roadrunner. The coyote wears a new pair of power roller skates, which provide a constant horizontal acceleration of 15.0 m/s2, as shown in Figure P3.59. The coyote starts off at rest 70.0 m from the edge of a cliff at the instant the roadrunner zips in the direction of the cliff, (a) If the roadrunner moves with constant speed, find the minimum speed the roadrunner must have to reach the cliff before the coyote. (b) If the cliff is 1.00 102 m above the base of a canyon, find where the coyote lands in the canyon. (Assume his skates are still in operation when he is in flight and that his horizontal component of acceleration remains constant at 15.0 m/s2.) Figure P3.59
A baseball is thrown from the outfield toward the catcher. When the hall reaches its highest point, which statement is true? (a) Its velocity and its acceleration are both zero, (b) Its velocity is not zero, but its acceleration is zero, (c) Its velocity is perpendicular to its acceleration, (d) Its acceleration depends on the angle at which the ball was thrown.(e) None of statements (a) through (d) is true.
A baseball is thrown from the outfield toward the catcher. When the ball reaches its highest point, which statement is true? (a) Its velocity and its acceleration are both zero. (b) Its velocity is not zero, but its acceleration is zero. (c) Its velocity is perpendicular to its acceleration. (d) Its acceleration depends on the angle at which the ball was thrown. (e) None of statements (a) through (d) is true.
Neglecting air resistance, which of the following is true for a ball thrown at an angle to the horizontal? (2.5) (a) It has a constant velocity in the +x direction. (b) It has a constant acceleration in the y direction. (c) It has a changing velocity in the +y direction. (d) All of the preceding are true.
A ball rolls in a straight line along the horizontal direction. Using motion diagrams (or multi flash photo-graphs), describe the velocity and acceleration of the ball for each of the following situations: (a) The ball moves to the right at a constant speed, (b) The ball moves from right to left and continually slows down, (c) The ball moves from right to left and continually speeds up. (d) The ball moves to the right, first speeding up at a constant rate and then slowing down at a constant rate.
KEY TERMS 1. physics (intro) 2. position (2.1) 3. motion 4. scalar (2.2) 5. vector 6. average speed 7. distance 8. instantaneous speed 9. average velocity 10. displacement 11. instantaneous velocity 12. acceleration (2.3) 13. average acceleration 14. acceleration due to gravity 15. free fall 16. terminal velocity 17. centripetal acceleration (2.4) 18. projectile motion (2.5) For each of the following items, fill in the number of the appropriate Key Term from the preceding list. b. _____ Difference between final and initial velocities divided by time
When the pilot reverses the propeller in a boat moving north, the boat moves with an acceleration directed south. Assume the acceleration of the boat remains constant in magnitude and direction. What happens to the boat? (a) It eventually stops and remains stopped, (b) It eventually stops and then speeds up in the forward direction, (c) It eventually stops and then speeds up in the reverse direction, (d) It never stops
A student derides to measure the muzzle velocity of a pellet shot from his gun. He points the gun horizontally. He place a target on a vertical wall a distance x away from the gun. He pellet hits the target a vertical distance y below the gun. (a) Show that the position of the pellet when traveling through the air is given by y = Ax2, where A it a constant. (b) Express the constant A In terms of the initial (muzzle) velocity and the free-fall acceleration. (c) If x = 3.00 m and y = 0 210 m, what is the initial speed of the pellet?
Entering his dorm room, a student tosses his book bag to the right and upward at an angle of 45 with the horizontal (Fig. OQ4.2). Air resistance does not affect the bag. The bag moves through point immediately after it leaves the students hand, through point at the top of its flight, and through point immediately before it lands on the top bunk bed. (i) Rank the following horizontal and vertical velocity components from the largest to the smallest. (a) x (b) y (c) x (d) y (e) y. Note that zero is Larger than a negative number. If two quantities are equal, show them as equal in your list. If any quantity is equal to zero, show that fact in your list. (ii) Similarly, rank the following acceleration components. (a) ax (b) ay (c) ax (d) ay (e) ay.
A boy stands on a diving board and tosses a stone into a swimming pool. The stone is thrown from a height of 2.50 m above the water surface with a velocity of 4.00 m/s at an angle of 60.0 above the horizontal. As the stone strikes the water surface, it immediately slows down to exactly half the speed it had when it struck the water and maintains that speed while in the water. After the stone enters the water, it moves in a straight line in the direction of the velocity it had when it struck the water. If the pool is 3.00 m deep, how much tune elapses between when the stone is thrown and when it strikes the bottom of the pool?
A player holds two baseballs a height h above the ground. He throws one ball vertically upward at speed v0 and the other vertically downward at the same speed. Calculate (a) the speed of each ball as it hits the ground and (b) the difference between their times of flight.
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