Question

A toy car starts from rest and moves with a constant acceleration for 2 seconds, reaching a velocity of 6m/s.It then slows down with constant deceleration of 1m/s² for 6 seconds and then stops.

*Work out the total distance travelled by the toy car.​

Answer 1

Answer:

Given :

• u = 6m/s
• v = 0m/s ( finally stops)
• a = -1m/s ( negative as it is decelerating not accelerating)
• t = 6sec
• s = ?

By Second Equation of Motion,

• s = ut + 1/2 at^2
• s = 6 * 6 + 1/2 * -1 * 6^2
• s = 36 + (-1/2) * 36
• s = 36 + ( -18)
• s = 36 - 18
• s = 18 metres

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