According to Newton's Second Law of Motion, the sum of the forces that act on an object with a mass m that moves in an acceleration a is equal to m•a an object whose mass is 80 grams has an acceleration of 20 per seconds square What calculation will give us the sum of the forces that act on the object, in Newtons (which are kg•m/s^2) choose 1 answer
A.80•20
B.80•1000•20
C. 80/1000•20
D.80/60^2•20

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

The probability that you roll a two on a six-sided die is 1 6 16 . if you roll the die 60 times, how many twos can you expect to roll

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?