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Help find instantaneous velocity at X seconds?
http://i.imgur.com/AbHz5AO.png <-- Chart and questions in a image
The position versus time for a certain object moving along the x-axis is shown. The objects intial postion is -3m.
Find the instantaneous velocity at 0.5s?
Answer in units of m/s
Find the instantaneous velocity at 2.5s?
Answer in units of m/s
Find the instantaneous velocity at 4.5s?
Answer in units of m/s
Find the instantaneous velocity at 8.5s?
Answer in units of m/s
Thank you for your time helping me.
1 Answer
- 8 years agoFavorite Answer
v = ds/dt so calculate the slope at each point:
t=0.5 s:
v = (10 - (-3)) m / 1s = 13 m/s
t=2.5 s:
v = (5 - 10)m / (4-1)s = -5/3 m/s = -1.67 m/s
t=4.5 s:
v = 0 (horizontal line= 0 slope)
t=8.5 s:
v = (0 - (-5))m / 1s = 5 m/s
