A car of mass 800 kg is moving up a hill inclined at θ° to the horizontal, where sin θ = 0.15. The initial speed of the car is 8 m s⁻¹. Twelve seconds later the car has travelled 120 m up the hill and has speed 14 m s⁻¹.

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A car of mass 800 kg is moving up a hill inclined at θ° to the horizontal, where sin θ = 0.15. The initial speed of the car is 8 m s⁻¹. Twelve seconds later the car has travelled 120 m up the hill and has speed 14 m s⁻¹.

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