…

                                                                                                 Extra Credit A 1500 kg car goes from 10 m/s to 35 m/s in 5.0 s. Calculate the work done by the car?                            (4.0 points))                                                                                                                                                               

Bonus! (I will grade this manually and assign points) One of…

Bonus! (I will grade this manually and assign points) One of the videos we watched in class was a story about a young lady whose parents forced her to undergo a lobotomy, leaving her mentally incapacitated. One of her family members became a vocal advocate for mental health care later in life. This family created a foundation that founded the Special Olympics. What is the name of the young lady, or the family name?

(a).       Three forces, F1 = 150 N, F2 = 10.0 N and F3 = 30…

(a).       Three forces, F1 = 150 N, F2 = 10.0 N and F3 = 30.0 N act on a 15 kg object. If F1 and F2 act in same direction, while F3 acts in the opposite direction, what is the              magnitude of the acceleration of the object?                                                                                          (2.5 points)      b).      To negotiate a curve of radius 38 m, the maximum force of static friction (centripetal force) that can act on a 1,350-kg car going around the curve is 8,200 N.            What speed limit should be posted for the curve so that cars can negotiate safely?                                                                                                       (3.0 points)                                                                                                                        c).         With what speed must a 75 kg object be going to have a linear momentum of 925 kg m/s?             (1.5 points)

(a).       At what depth in the ocean is the gauge pressure…

(a).       At what depth in the ocean is the gauge pressure acting on a hatch that has an area of 5.5 m2 equal to 490,000 Pa?   (Take g = 9.80 m/s2 and density of sea water            to be 1020 kg/m3)                                                                                                                    (1.5 points)       (b).         What is the force on the hatch area due to only the gauge pressure?                                                  (1.5 points) (c).         A hydraulic lift in a garage has two pistons: a small one with a cross-sectional area of 4.00 cm2 and large one with a cross-sectional area 250 cm2. If this lift is              designed to raise a 3500 kg car, what minimum force must be applied to the small piston and what is the pressure of the hydraulic lift?                     (3.0 points)