The puppy then goes home and is sitting on the couch when she sees her chew toy. She accelerates towards the chew toy at 5 m/s2 and it takes
the puppy 10 s to reach the toy. What is the velocity of the puppy when
it reaches its toy?

50m/s

Explanation:

Given parameters:

Acceleration  = 5m/s²

Time  = 10s

Unknown:

Final velocity of the puppy  = ?

Solution:

Acceleration is the rate of change of velocity with time taken. The puppy has an initial velocity of 0m/s.

 The formula is:

 Acceleration  =  

         5  =  

               Final velocity  = 50m/s

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.