A sled starts from rest at the top of a srom-cut end the snowy surface. Additional Materials Reading 13. [1/1 Points] DETAILS PREVIOUS ANSWERS DSUNIPHYS1 7.3.WA.020. at nishiter planes are launched from aircraft carriers with the aid of their own engines and a catapult. If in the proce are on the jet by the catapuk? Additional Materials 14. [-/2 Points] DETAILS OSUNIPHYS1 7.3.WA.024. an abject with a mess uf me = 2.00 ky is truuling with an initial velucky of v, - (5.501 - 1.20]; my's. (a) Determine its initial kinetic energy. [Give your answer to at least see decimal place. ) * wisely to v, - (5.got 4 6.cul) my's. Additional Materials Submit Areusr 5. [0/4 Points] DETAILS PREVIOUS ANSWERS OSUNIPHYS1 7.3.WA.028. a pickup truck is traveling with constant velocity up an Interstate entrance ramp with a 5.00' scope. A 55.0-kg box sits on the bed of the true 18456.21 3 (a) During an Interval In which the truck travels 350 m up the ramp entrance. what is the net work done on the box? and at the truck and the box. Given that the (b) what is the work dor gravity 18438.71x Have may ww ded.wemin (ci what is the work dans un the box by the normal forza due to the bed of the truck? (d) what is the work done on the box by the tallpace of the truck? 5. [0/1 Points] DETAILS PREVIOUS ANSWERS OSUNIPHYS1 7.1.P.038. It takes 675 ] of work to compress a spring 12 cm. What is the force constant of the spring (in kN/m)? 56.25 X kN/m Additional Materials Reading 2. [0/2 Points] DETAILS PREVIOUS ANSWERS OSUNIPHYS1 7.1.P.026. MY NOTES ASK YOUR TEACHER PRACTI Suppose a car travels 108 km at a speed of 30.0 m/s and uses 1.9 gal of gasoline. Orly 30% of the gasoline goes into useful work by the force that keeps the car moving at constant speed despite friction. (The energy content of gasoline is 140 MJ/gal.) (a) what is the magnitude of the force (In N) exerted to keep the car moving at constant speed? 633.33 XN (b) If the required force Is directly proportional to speed, how many gallons will be used to drive 108 kim ar a speed of 19.0 m/'s? gallons