Conservation of momentum

8.6 m/s

Explanation:

From the question,

applying law of conservation of momentum

Total momentum before collision = Total momentum after collsion

mu+m'u' = mv+m'v' Equation 1

make v' the susbject of the equation

v' = (mu+m'u'-mv)/m' Euqation 2

Where m = mass of the ball, m' = mass of the can, u = initial velocity of the ball, u' = initial velocity of the can, v = Final velocity of the ball, v' = final velocity of the can.

Given: m = 1.2 kg, m' = 0.7 kg, u = 14 m/s , u' = 0 m/s (at rest), v = 9 m/s.

Substitute these values into equation 2

v' = [(1.2×14)+(0.7×0)-(1.2×9)]/0.7

v' = (16.8-10.8)/0.7

v' = 6/0.7

v' = 8.6 m/s

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 components of a physical goal mentioned on the list of choices that you've provided.