Newton's second law

(the law of acceleration)

The acceleration of an object depends on the mass of the object and the amount of force applied.

Newton's second law

1.Mass- the acceleration decreases as mass increases (see fig 4 pg 47)

2.Force- acceleration increases as force increases. (see fig 4 pg 47)

Force= mass x acceleration

OR

F= ma m=F/a a=F/m

Mike's car, which has a mass of 1,000 kg, is out of gas. Mike is trying to push the car to a gas station, and he makes the car go 0.05 m/sec2. Using Newton's Second Law, compute how much force Mike is applying to the car.

Force= mass x acceleration

Or

F= ma

Mass=1000 kg

Acceleration= 0.05 m/sec2

F= ma

F= (1,000 kg) x 0.05 m/sec2

F= 50 kg . m/sec2 or

F= 50 N

(1 Newton= kg x m/sec2)

Open to page 48

Complete 1-3

1) 9.8 m/sec2

2) 50,000 N

3) 350 N