Please answer questions 005,006,007,008,009 Thank you for your time. This print-
ID: 1525299 • Letter: P
Question
Please answer questions 005,006,007,008,009
Thank you for your time.
This print-out should have 9 questions. 005 (part 2 of 3) 10.0 points Multiple-choice questions may continue on the next column or page find all choices How long does it take the ball to reach the hoop? before answering. Answer in units of s 001 (part 1 of 3) 10.0 points 006 (part 3 of 3) 10.0 points A particle moves in the zy plane with constant acceleration. At time zero, the particle is at What is the horizontal length l of the shot 8.5 m, y 3.5 m, and has velocity io Answer in units of m (5 m/s) i (-4.5 m/s) J. The acceleration is given by (1 m/s2) i+ 007 10.0 points What is the r component of velocity after A cat chases a mouse across a 1.5 m high 1.5 s? table. The mouse steps out of the way, and Answer in units of m/s the cat slides off the table and strikes the floor 1.3 m from the edge of the table. 002 (part 2 of 3) 10.0 points What was the cat's speed when it slid off What is the y component of velocity after the table? The acceleration of gravity is 1.5 s? 9.81 m/s Answer in units of m/ Answer in units of m/s. 003 (part 3 of 3) 10.0 points 008 (part 1 of 2) 10.0 points What is the magnitude of the displacement A particle travels horizontally between two from the origin (z 0 m, y 0 m) after parallel walls separated by 18.4 m. It moves 1.5 s? toward the opposing wall at a constant rate Answer in units of m of 8.3 m/s. Also, it has an acceleration in the direction parallel to the walls of 4.8 m/s 004 (part 1 of 3) 10.0 points Neglect: Air friction. Your teacher tosses a basketball. The ball gets through the hoop (lucky shot) 4.8 m/s 8.3 m/s 18.4 m. What will be its speed when it hits the opposing wall? I Answer in units of m/s. 009 (part 2 of 2) 10.0 points At what angle with the wall will the particle strike? Figure: Not drawn to scale. Answer in units of How long does it take the ball to reach its maximum height? Answer in units of s.
Explanation / Answer
here,
5)
initial speed , u = 17 m/s
theta = 50 degree
h = 3.048 - 2.611 = 0.437 m
let the time taken be t
h = u * sin(theta) *t - 0.5 * g * t^2
0.437 = 17 * sin(50) * t - 0.5 * 9.8 * t^2
t = 2.62 s
6)
the horizontal length , l = u * cos(50) * t
l = 17 * cos(50) * 2.62 = 28.6 m
7)
height , h = 1.5 m
x = 1.3 m
let the initial speed of cat be u and time taken be t
h = 0 + 0.5 * g * t^2
1.5 = 0 + 0.5 * 9.8 * t^2
t = 0.55 s
x = u * t
1.3 = u * 0.55
u = 2.35 m/s
the initial speed is 2.35 m/s
8)
let the time taken to hit the opposite plate be t
18.4 = 8.3 * t
t = 2.22 s
final y speed , vy = 0 + 0.5 * 4.8 * 2.22^2 = 11.8 m/s
the speed when it hits the opposite wall , v = sqrt(11.8^2 + 8.3^2) = 14.4 m/s