Question

A toy car accelerates from rest at 2 metre per second square for 3 seconds afterwards the card begins to Slow Down it travels a combined total of 27 before coming to rest tell the rate of acceleration and total time taken

Answer 1

Answer:

a= -2/3 m/s^2, t= find using the solution below

Explanation:

I assume you mean deceleration.

First, you calculate the final speed of the car after 3s using v = u + at

Second, you plug the 'u' from above and v=0 (rest), s=27 find the deceleration with v^2 - u^2 = 2as

Finally, you plug 'a' that into s = ut + 0.5a(t^2) and find the roots of the equation and neglect the improbable one (negative) to find the time taken.

Answer 2

Answer:

Please refer to the images.

Explanation:

Please look at the images for your answer.