- #1
silentcoder
- 18
- 0
Hi,
I am not going to ask you to do my homework, since i have done them myself. I just want your help to double check my questions.
1. A tennis ball is thrown horizontally with an initial velocity of 14.5 m/s from a height of 1.4 m above the ground. Determine the following:
(a) the time the ball spends in the air. (0.53 s)
(b) the velocity with which the ball impacts the ground. (15 m/s [20 degree below horizonal])
2. You are trying to throw a ball over a 3.0 m high fence. You throw the ball from a height of 1.0 m with an initial velocity of 27 m/s 50° above the horizontal. Determine the following:
(a) the maximum height of the ball. (23.5 m)
(b) the time the ball spends in the air. (4.33 s)
3. An artillery gun can fire a shell at an initial velocity of 1700 m/s at an angle of 55° above the horizontal. Determine the following:
(a) the time the shell spends in the air. (Is the answer appx. 284 s)
If i am missing any directions, please let me know.
Thanks! I really appreciate it!
I am not going to ask you to do my homework, since i have done them myself. I just want your help to double check my questions.
1. A tennis ball is thrown horizontally with an initial velocity of 14.5 m/s from a height of 1.4 m above the ground. Determine the following:
(a) the time the ball spends in the air. (0.53 s)
(b) the velocity with which the ball impacts the ground. (15 m/s [20 degree below horizonal])
2. You are trying to throw a ball over a 3.0 m high fence. You throw the ball from a height of 1.0 m with an initial velocity of 27 m/s 50° above the horizontal. Determine the following:
(a) the maximum height of the ball. (23.5 m)
(b) the time the ball spends in the air. (4.33 s)
3. An artillery gun can fire a shell at an initial velocity of 1700 m/s at an angle of 55° above the horizontal. Determine the following:
(a) the time the shell spends in the air. (Is the answer appx. 284 s)
If i am missing any directions, please let me know.
Thanks! I really appreciate it!