Concept explainers
In a scattering experiment, an alpha particle A is projected with the velocity
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
Vector Mechanics For Engineers
- A ball is thrown from the top of a 25-m tall building with an initial velocity v 0 at an angle above the horizontal. If it strikes the horizontal ground below at a distance 20 m from the foot of thebuilding, determine v 0 and . Also find its velocity when it strikes the ground.arrow_forward14. . Block A with a mass of 2.0 kg is moving to the right at 5.0 m/s. It collides with a block B with a mass of 3.0 kg moving at 1.0 m/s to the left. If after collision, block A stops moving, what is the velocity of block B? A. 2.3 m/s to the left B. 2.3 m/s to the right C. 7.0 m/s to the left D. 7.0 m/s to the right please show complete solutionarrow_forwardA batter hits the baseball A with an initial velocity of v0 = 114 ft/sec directly toward fielder B at an angle of 22° to the horizontal; the initial position of the ball is 2.5 ft above ground level. Fielder B requires 0.42 sec to judge where the ball should be caught and begins moving to that position with constant speed. Because of great experience, fielder B chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. The catch position is the field location at which the ball altitude is 8.5 ft. Determine the velocity of the ball relative to the fielder at the instant the catch is made.arrow_forward
- A particle of mass m is projected from point A with an initial velocity v0 perpendicular to OA and moves under a central force F along an elliptic path defined by the equation r=r0 /(2 - cos 0) Using Eq. (12.35), show that F is inversely proportional to the square of the distance r from the particle to the center of force 0.arrow_forwardBall A is thrown straight up with an initial speed v0 and reaches a maximum elevation h before falling back down. When A reaches its maximum elevation, a second ball is thrown straight upward with the same initial speed v0 . At what height, y , will the balls cross paths?a. y= hb. y> h/2c. y= h/2d. y <h/2e. y=0arrow_forwardThe ball is kicked from point A with the initial velocity VA=12 m/sec. Determine the range, R, when the ball strikes the ground. A. 12.68 m B. 14.68 m C. 15. 83 m D. None of thesearrow_forward
- A ball is suspended from a light 1.4 m string as shown. The string makes an angle of 28 degrees with the vertical. The ball is then kicked up and to the right such that the string remains taut the entire time the ball swings upwards. This kick gives the ball an initial velocity of 1.1 m/s. What will be the speed, in meters per second, of the ball when it reaches its lowest point (θ = 0)? What will be the maximum angle, in degrees, the string will make with the vertical?arrow_forwardThe following figure shows 2 particles of masses m1 and m2, with velocities before the collision of magnitude v1 and v2. If the collision is perfectly elastic, find the magnitude of the velocities v1' and v2' after the collision and the angle of incidence θ, as a function of the masses and velocities before the collision.arrow_forwardThe velocity of a particle, measured from a rectangular coordinate system (X, Y, Z)is given by ? = [t3i + 8t2j + (5t + 2) k ]m/s, where t is given in seconds. If the particle is at the origin (x = 0, y = 0, z = 0) when t = 0 s, determine: (a) The intensity of the particle velocity when t = 4 s (b) The intensity of the particle acceleration when t = 4 s (c) The position of the particle in coordinates (x, y, z) when t = 4 sarrow_forward
- A truck of mass 50 tonnes is moving at 85kmph. It collides with a second truck of mass 30 tonnes moving in the opposite direction at 60 kmph. After the collision the second truck has changed its speed to 2100 cm/s in the opposite direction as before the collision. Find: (i) the velocity of the first truck after the collision (ii) the coefficient of restitution. 1.The velocity of the first truck after the collision in (m/s) is 2.The Coefficient of Restitution isarrow_forwardA vehicle of mass 45 tonnes is moving at 85kmph. It collides with a second vehicle of mass 30 tonnes moving in the opposite direction at 50 kmph. After the collision the second vehicle has changed its speed to 2400 cm/s in the opposite direction as before the collision. Find: (i) the velocity of the first vehicle after the collision (ii) the coefficient of restitution. 1.The velocity of the first vehicle after the collision in (m/s) is 2.The Coefficient of Restitution isarrow_forwardThe trajectory of a soccer ball is analyzed when a goalkeeper decides to place it in the center of the field. Theball is kicked at a height of 1.20 meters measured from the ground with a direction of 25 degrees withrelative to the vertical. It was observed through cameras that the ball remained in the air for 2.4seconds. Determine:a- The speed with which the ball goes out.b- The hot horizontal distance it travels before hitting the ground.c- The maximum height the ball reaches.arrow_forward
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY