IB Physics SL A.1.6 Uniform acceleration equations

Select and rearrange constant-acceleration equations efficiently to solve straight-line, stopping and vertical motion problems.

Exam points

choose a SUVAT equation that matches the known variables, then solve for time, speed or acceleration with units
use v^2 = u^2 + 2as to compare speeds at two positions without first finding the acceleration
check the final value with the unit implied by the equation, such as s for time or m s^-2 for acceleration

[Maximum number: 2]

This question is in two parts. Part 1 is about the motion of a ship. Part 2 is about melting ice.

The ship's engines are switched off and the ship comes to rest from a speed of $7 \mathrm{~m} \mathrm{~s}^{-1}$ in a time of 650 s .

Estimate the distance that the ship takes to stop. Assume that the acceleration is uniform.

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