A57 g tennis ball is traveling at 45 m/s to the right, when it hits a racket. the ball reverses direction and travels at 33 m/s. the ball is in contact with the racket for 0.0085 s.

what is the magnitude of the force that was exerted on the ball?

1.8 n
12 n
81 n
520 n

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

there are no contact forces mentioned on the list of choices that you've provided.

snell's law

refractve index = sin incidence / sin refraction