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Maths - Kinematics

A car starts from the point A. At time ts after leaving A, the distance of the car from A is sm what s = 30t-0.4t2. The car reaches the point B when t = 25.
Show that the car travels with constant acceleration
A runner passes through B when t=0 With an initial velocity of 2ms-1 running directly towards A. The runner has a constant acceleration of 0.1ms-2.
Find the distance from A at which the runner and the car pass each other.
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Avatar for Sinnoh
Sinnoh
22
Differentiate displacement to get velocity, differentiate velocity to get acceleration which should be a constant.
The next part of the question, it's basically asking where a linear function and quadratic function intercept. Decide on a positive direction and a negative direction and stick to it.
(edited 6 years ago)
Original post by Sinnoh
Differentiate displacement to get velocity, differentiate velocity to get acceleration which should be a constant.
The next part of the question, it's basically asking where a linear function and quadratic function intercept. Decide on a positive direction and a negative direction and stick to it.


Ok thank you

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