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A car travelling at a speed of 140km/h decelerates for 20 s. During this time it travels at 500 m . A) what is its

A car travelling at a speed of 140km/h decelerates for 20 s. During this time it travels at 500 m .

A) what is its deceleration in m/s².

b) what is its speed after the deceleration in km/h.

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