i have a line graph with positions 1-10 in the positive direction.
if a toy car rolls from +3m to +5m, which of the following statements is true?
a. Xf=+3 m
b. Xi=+3 m
c. delta x=+3 m
d. Vavg=3 m/s
i think the answer might be B?
please correct me if i'm wrong
Yes, a. You can't say what the average velocity Vavg is without knowing the elepsed time.
To determine which statement is true, let's go through each option:
a. Xf=+3 m: This statement is not true because Xf (final position) is given as +5 m, not +3 m.
b. Xi=+3 m: This statement is true. Xi (initial position) is given as +3 m.
c. delta x=+3 m: This statement is not true. Delta x (change in position) is calculated by subtracting the initial position from the final position, so in this case, delta x = Xf - Xi = (+5 m) - (+3 m) = +2 m.
d. Vavg=3 m/s: This statement is not true. Vavg (average velocity) is calculated by dividing the change in position by the time taken, so we need additional information to determine the velocity.
Therefore, the correct statement is b. Xi=+3 m.