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72% Sat Jun 11 11:01:23 AM Q :E Chrome File Edit View History Bookmarks People Window Help Josh Motion in multiple dimens C Chegg Study I Guided Soll www.webassign.net /web/Student/Assignment-Responses/last?dep 13907358 App Book Apple YouTube home E Watch Live Sports E O tech Destiny LFG.Net l The faculty.pnc.edu/ptes DTR Destiny Tracker De Eii C. Henry Edwards, Section 3.3 3. -1 points CJ10 3. 018 My Notes Ask Your Teacher A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 669 m/s. The gun is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.024 m below the center. What is the horizontal distance between the end of the rifle and the b s-eye? Additional Materials Section 3.3 4. C+D -2 points CJ10 3.P 020. GO My Notes C+ Ask Your Teacher club at a speed of 16.8 m/s at an angle of 42.6 above the A golfer hits a shot to a green that is elevated 3 m above the point wher the ba is struck. The ball leaves the t rises to its maximum height and the falls down to the green. Ignoring air resistance, find the speed of horizonta the ball just before it lands Select--- 013 GO Tutorial Additional Materials Section 3.3

Explanation / Answer

3 ans

initial speed u=669 m/s

distance s=0.024 m

using the projectile motion

Hmax=u^2 sin^2(theta)/2g

0.024=(669)^2 sin^2(theta)/2*9.8

0.4704=447561 sin^2(theta)

1.1*10^-6=sin^(theta)

1.05*10^-3=sin(theta)

theta=0.063°

now we find the horizantal distance

R=u^2 sin(2theta)/g

=(669)^2 sin(2*0.063)/9.8=100.4 m

4 ans

distance s=3 m

intial velocity u=16.8 m/s

angle =42.6 °

this concept belongs to the work energy and power

V^2-u^2=2gs sin(theta)

V^2-(16.8)^2=2*9.8*3*sin(42.6)

V^2=282.24+39.8=322.04 m/s

V=17.95 m/s

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