Asked by janie
C Exercise 3.57
In laboratory situations, a projectile’s range can be used to determine its speed. To see how this is done, suppose a ball rolls off a horizontal table and lands 1m out from the edge of the table.
Part A
If the tabletop is 70cm above the floor, determine the time the ball is in the air.
Express your answer using two significant figures.
t =
0.38
s
Part B
Determine the ball's speed as it left the table top.
Express your answer using two significant figures.
v =
1.84
m/s
cant figure out part b
In laboratory situations, a projectile’s range can be used to determine its speed. To see how this is done, suppose a ball rolls off a horizontal table and lands 1m out from the edge of the table.
Part A
If the tabletop is 70cm above the floor, determine the time the ball is in the air.
Express your answer using two significant figures.
t =
0.38
s
Part B
Determine the ball's speed as it left the table top.
Express your answer using two significant figures.
v =
1.84
m/s
cant figure out part b
Answers
Answered by
Henry
A. h = 0.5g*t^2 = 0.7 m.
4.9t^2 = 0.7
t^2 = 0.1429
Tf = 0.378 s. = Fall time.
B. Dx = Xo*Tf = 1 m
Xo * 0.378 = 1
Xo = 1/0.378 = 2.65 m/s. = Initial hor.
velocity.
4.9t^2 = 0.7
t^2 = 0.1429
Tf = 0.378 s. = Fall time.
B. Dx = Xo*Tf = 1 m
Xo * 0.378 = 1
Xo = 1/0.378 = 2.65 m/s. = Initial hor.
velocity.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.