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Q. The mousetrap car has a mass of 100 grams and starts travelling at the speed of 1.80 m/s and after 5seconds get the rested? What force did the motor exert?

Q. A roller coaster is towed up an incline at a steady speed of 0.510m/s by a chain parallel to the surface of the incline. The slope is 2.85 percent, which means that the elevation increases by 2.85m for every 100m of horizontal distance. The mass of the roller coaster is 410kg. Neglecting friction, what is the magnitude of force exerted on roller coaster by the chain?

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Category:- Physics
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