- #1

- 4

- 0

For this question is my vi=35m/s and vf=30m/s? If so, when I draw my vectors do I subtract them or add them. The equation for acceleration is a=vf-vi/t right?

Please help and post your final answer and solution as I need to compare with mine!

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter ahmed1237
- Start date

- #1

- 4

- 0

For this question is my vi=35m/s and vf=30m/s? If so, when I draw my vectors do I subtract them or add them. The equation for acceleration is a=vf-vi/t right?

Please help and post your final answer and solution as I need to compare with mine!

- #2

Mark44

Mentor

- 34,880

- 6,621

The ball's velocity is in the opposite direction after it is struck by the racket.A tennis ball crossing a net at 35m/s [S10 degrees W] strikes a person's racket and her volley returns it at 30m/s [N 30 degrees W]. If the person's racket was in contact with the ball for 0.005s then what is acceleration of the ball?

For this question is my vi=35m/s and vf=30m/s? If so, when I draw my vectors do I subtract them or add them. The equation for acceleration is a=vf-vi/t right?

(v

No, the way it works here is that you show us what you got, and we'll let you know if it's correct or not.Please help and post your final answer and solution as I need to compare with mine!

Last edited:

- #3

- 4

- 0

so my answer is 4600m/s2 (w 21 degrees n) is that correct?

- #4

Mark44

Mentor

- 34,880

- 6,621

The units should be m^{2}/sec^{2}, but the acceleration value seems way high to me.

- #5

- 4

- 0

so then how do I go about doing this?

Share: