Question

A parachute on a racing dragster opens and changes the speed of the car from 85 m/s to 45 m/s in a period of 4.5 seconds. What is the acceleration of the dragster?
please help me work it out, please don't give just the answer

Answer 1

The acceleration of the dragster is 8.89 m/s².

To find the acceleration, the given values are,

V₀ = 85 m/s

V = 45 m/s

What is acceleration?

• Acceleration is a rate of change of velocity with respect to time with respect to direction and speed.

• Acceleration formula can be written as,

         $\overline{a} = \frac{v - v_0}{t} = \frac{\Delta v}{\Delta t}$`

a = acceleration

v = final velocity

v₀= starting velocity

t  =  time

• Acceleration is a vector quantity.
• The unit of acceleration is m/s².

Substituting the given values in the formula,

    a = (V-Vo)/time

       = (45-85m/s)/4.5 s.

    a = 8.89m/s².

Thus, the acceleration a of the dragster is 8.89 m/s².

Learn more about acceleration,

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