Name: Physics 20 Unit C Assessment Assignment - Version D Remember to use GRASP and show all of your work for every question! the be To earn full marks you need to: . Write what is given and required . Write the needed formulas and rearrange if necessary . Substitute into the formulas and include units . State your answer with correct sig digs Module 5: Developing Level (3 marks each) 1) What centripetal force is required to cause a 2500 kg car to travel around a 70 m diameter traffic circle ("'roundabout") with a speed of 35 km/h? m = 2500 kg F= MV 21= 70m 1= 120 )= 35m V= 35 km/h F = 2500 X (35 x 1000)2 3600 =(35*1000 ) mis 3600 F = 6751. 5N F = 6. 8 x 10# N $315 x 10 190 the Earth. 2) The Earth is 1.49x101 m from the Sun. If the Earth requires 365.25 days to go once around the Sun, what is the centripetal force on the Earth? T = 365 . 25 = ( 36 5 . 2 5 x 24 x 3600)sec mofearth= 5. 98x 1024 T = 25r V F = mv F= m . ( 2x5 ) . 1 F = 3. 326 x 10 22 M v = 2>TY T F = 435 . 5. 97 # 10 . 1. 49 x 10' (365. 25 x 24 x 3600)