### What is its speed after it has moved the 7.50m

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Q1. A 25.00 kg projectile is fired by accelerating it with an electromagnetic rail gun on the Earth's surface. The rail makes a 30.0 degree angle with the horizontal, and gun applies a 1250N force on the projectile for a distance of 7.50m along the rail. (a) ignore air resistance and friction, what is the net work done on the projectile, by all forces acting on it, as it moves 7.50m along the rail? (b) Assume it started at rest, what is its speed after it has moved the 7.50m?

Q2. A force of k is applied to an object for a small fraction of a second, t_k, less than the duration of one frame, t_f. Our simulation doesn't support applying forces for less than an entire frame, so if we wanted to simulate the effect of force k over duration of t_k, how much force must we apply over our frame duration, t_f?

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