University:
University of North Carolina at Charlotte
Course:
PHYS 1102 | Introductory Physics II
Academic year:

2021
Views:

468

Pages:

4
Author:

ilikemyicons0y5

Projectile Motion Worksheet Use the following to answer question 1: A projectile is fired at an angle of 60 deg above the horizontal with an initial speed of 30.0 m/s. 1. What is the magnitude of the horizontal component of the projectile's displacement at Hend of 2s? A) 30 m R=Vcoset B) 40 m. C) 10 m D) 20 m E) 50 m -30c0560 2 30.0m Use the following to answer questions 2-7: A projectile fired from a gun has initial horizontal and vertical components of velocity equal to 30 m/s and 40m / s respectively. 2. Determine the initial speed of the projectile. A) 40 m/s B) 50 m/s 60 m/s D) 70 m/s E) 80 m/s 3. At what angle is the projectile fired (measured with respect to the horizontal)? A) 37° B) 40 deg C) 45 deg 53 deg E) 60 deg 4. Approximately how long does it take the projectile to reach the highest point in its trajectory? A) 1s B) 2s 45 D) 8s E) 16 s Page 1 5. What is the speed of the projectile when it is at the highest point in its trajectory? A) 0 m/s B) 20 m/s (C)) 30 m/s D40 m/s E) 50 m/s 6. What is the acceleration of the projectile when it reaches its maximum height? A) zero m / (s ^ 2) B) 0.8m / (s ^ 2) downward 4.9m / (s ^ 2) downward D) less than 9.8m / (s ^ 2) and non-zero. E) Its magnitude is 9.8m / (s ^ 2) and its direction is changing. 7. What is the magnitude of the projectile's velocity just before it strikes the ground? A) zero m/s B) 9.8 m/s C) 30 m/s D) 40 m/s 50 m/s Use the following to answer questions 8-10: A shell is fired with a horizontal velocity in the positive x direction from the top of an 80-m high cliff. The shell strikes the ground 1330 m from the base of the cliff. The drawing is not to scale. a_{n} = 0 a_{y} = 0 y_{0} =\%n V x = v x0 ^ 2 + 2a_{x}(x - x_{0}) 1330 m pi_{f} = 1390m 8. Determine the initial speed of the shell. A) 4.0 m/s B) 9.8 m/s C) 82 m/s D) 170 m/s E) 330 m/s Page 2 9. What is the speed of the shell as it hits the ground? A) 4.0 m/s B) 9.8 m/s C) 82 m/s D) 170 m/s E) 330 m/s 10. What is the magnitude of the acceleration of the shell just before it strikes the ground? A) 4m / (s ^ 2) B) 9.8m / (s ^ 2) C) 82m / (s ^ 2) D) 170m / (s ^ 2) E) 330m / (s ^ 2) no friction no gravity 11. A puck slides across a smooth, level tabletop at height H at a constant speed V_{B} It slides off the edge of the table and hits the floor a distance x away as shown in the figure. ها bigcirc A_{2} = 0 a_{y} = 0 V_{0} = V_{0} x_{0} = 0 ay = - g a_{x} = 0 f = 0 What is the relationship between the distances x and H? Y (A) g = v_{0} * sqrt((2H)/g) B) x = (v_{0} ^ 2)/(2gH) x = (v_{0} ^ 2)/(gH) D) H = v_{0} * sqrt((2x)/g) E) x = v_{0} * H/g X = Y_{0} + V_{10}*t + 1/2 * a_{c} * t ^ 2 x = 0 + v_{0}*t + 0 x = v_{0}*t y=y 0 +v 0y + i/2 * ay t * ^ z O = H + O ^ (1/z) * (- 9) * t ^ z H = 1/2 * g * t ^ 2 gamma = V_{0} * sqrt((2H)/6) L_{f} = X Page 3 t = sqrt((2H)/G)