1. What is the minimum work needed to push a car, mass m, a distance d up a ramp at an incline of e? 2. A projectile is fired at an upward angle of e from the top of a cliff (height h) with a speed of v. What will be its speed when it strikes the ground below? 3. A gun is fired vertically into a block of wood (mass ml) at rest directly above it. If the bullet has a mass of m2 and a speed of v, how high will the block rise into the air after the bullet becomes embedded in it? 4. A 45-kg woman and a 70 kg man stand stationary 15.0 m apart on frictionless ice. If they are connected by a rope, and the man pulls on the rope so that he collides with the woman, how far will the man have moved