In a video game, a ball moving at 0.6 meter/second collides with a wall. After the collision, the velocity of the ball changed to -0.4 meter/second. The collision takes 0.2 seconds to occur. What’s the acceleration of the ball during the collision? Use .

Explanation:

The acceleration of an object is equal to the rate of change of  velocity of the object.

Mathematically, it is given by:

where

u is the initial velocity

v is the final velocity

t is the time elapsed

For the ball in this problem:

u = 0.6 m/s

v = -0.4 m/s

t = 0.2 s

Therefore, the acceleration of the ball is:

and the negative sign indicates that the acceleration's direction is opposite to the direction of the initial velocity.

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