We can use the equation of motion to solve this problem:
v = u + at
where:
v = final velocity = 22.2 m/s
u = initial velocity (what we need to find)
a = acceleration = 2.8 m/s^2
t = time taken = 4 s
Rearranging the equation, we get:
u = v - at
Substituting the given values:
u = 22.2 m/s - 2.8 m/s^2 * 4 s
Simplifying the equation, we have:
u = 22.2 m/s - 11.2 m/s
u = 11 m/s
Therefore, the toy car's initial velocity is 11 m/s.
) A toy race car zooms across the ground with an acceleration of 2.8 m/s^2. After 4 seconds it has a final velocity of 22.2 m/s, what is the toy car's initial velocity? show work
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