![Carlosruelas5409](/avatars/48379.jpg)
Carlosruelas5409
08.10.2019 •
Physics
Me with this question, especially the angle part. i have solved the initial velocity already. i don't know what to do. you.
Solved
Show answers
More tips
- L Leisure and Entertainment How to Choose the Perfect Gift for Men on February 23rd?...
- H Health and Medicine How to Treat Whooping Cough in Children?...
- H Health and Medicine Simple Ways to Lower Cholesterol in the Blood: Tips and Tricks...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- H Health and Medicine How to perform artificial respiration?...
Answers on questions: Physics
- P Physics Quien es el más guapo de BTS...
- P Physics Describe energy transformations (if any) that take place in gasoline. 1. Driver pumps the gas from the gas tank into the car....
- P Physics Anyone here in flvs fulltime...
- P Physics The image shows the path of a ball that s thrown. question is, at positions (a,b,c,d) and position (a,b,c,d) kinetic energy is maximum at position (a,b,c,d) potential energy is maximum....
- P Physics A car is traveling at a velocity of 13.5 m/sec (30 mph) north on a straight road. The mass of the car is 1,000 kg. Calculate the momentum of the car....
- P Physics Question 5: Moment of intertia of a composite rigid body A rigid body consists of four bodies joined together, as drawn below to scale. The point is at one corner of the rectangle...
- P Physics Please help ASAP work due time is 10:30am...
- P Physics Câu 34. Ba điện tích điểm q1=–10–6 C, q2=5.10–7 C, q3=4.10–7 C lần lượt đặt tại A, B, C trong không khí, AB=5 cm. AC=4 cm. BC=1 cm. Tính lực tác dụng lên q1 A. 4,05. 10–2 N B. 16,2....
- P Physics Two identical loudspeakers separated by distance Δx each emit sound waves of wavelength λ and amplitude a along the x-axis. What is the minimum value of the ratio Δx/λ for which the...
- P Physics Write an email to a classmate explaining why the velocity of the current in a river has no FN C02-F20-OP11USB effect on the time it takes to paddle a canoe across the river, as long...
Ответ:
At the top, the velocity only has horizontal component, so v=12 m/s is v_x, which is v*cos(theta), because v_x is constant, so the same when it was launched or now.
With the value of the initial speed (28 m/s, which is the total speed), you can set
v_x = v * cos( theta ) ---> 12 = 28*cos(theta) --> cos(theta)=12/28=3/7
or theta = 64.62 deg, it is D. Think about it. I hope you see it.
Ответ: