20 N 30 N 8 8 10 N 10 When a 60 g 006 kg tennis ball is served by a newly

# 20 n 30 n 8 8 10 n 10 when a 60 g 006 kg tennis ball

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10. When a 60 g (=0.06 kg) tennis ball is served by a newly invented machine, it accelerates from zero to 50 m/s. The ball experiences a constant acceleration due to the impact with the racket over a distance of 0.5 m. What is the net force acting on the ball? Use the formula: a= (vf2-vi2)/2d regarding the relation among acceleration a, final velocity vf, initial velocity viand the traveled distance of an object d. 11. Cole is riding a sled with initial speed of 5 m/s from west to east. The frictional force of 50 Nexists due west. The mass of the sled and Cole together is 100 kg. How far does the sled go before stopping? Use the formula: a= (vf2-vi2)/2d regarding the relation among acceleration a, final velocity vf, initial velocity viand the traveled distance of an object d.12. A 1,600 kg car is traveling with a speed of 20 m/s. Find the net force that is required to bring the car to a halt in a distance of 50m. Use the formula: a= (vf2-vi2)/2d regarding the relation among acceleration a, final velocity vf, initial velocity viand the traveled distance of an object d.
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