Influenced by the gravitational pull of a distant star, the velocity of an asteroid changes from from +19.3 km/s to −18.8 km/s over a period of 2.07 years. (a) what is the total change in the asteroid's velocity? (indicate the direction with the sign of your answer.) -3.81e4 correct: your answer is correct. m/s (b) what is the asteroid's average acceleration during this interval? (indicate the direction with the sign of your answer.) -5.84e-6 incorrect: your answer is incorrect. how does average acceleration depend on the change in velocity and the change in time? m/s2 additional materials

As per above given data

initial velocity = 19.3 km/s

final velocity = - 18.8 km/s

now in order to find the change in velocity

Part b)

Now we need to find acceleration

acceleration is given by formula

given that

now the acceleration is given as

so above is the acceleration

increases it

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