- #1
CowzRule101
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Homework Statement
David is driving a steady 21.0 m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70 m/s^2 at the instant when David passes.
David:
V= 21m/s
Tina:
V_i= 0 m/s
V_f= ?
acc= 2.7 m/s^2
How far does Tina drive before passing David?
What is her speed as she passes him?
Homework Equations
D_f= D_i + V_i + t_f + (1/2)at_f^2
V_f^2= V_i^2 + 2a(D_f - D_i)
V_f= V_i +at
The Attempt at a Solution
Well, I really don't have an attempt because I have no clue what to do. Any suggestions