Formula Review for Chapter 12 (Newton's Laws) 

pg 
Formula 
Units 
Word Problem 
Solution 
401 
F = m * a 
N 
1) What is the net force needed to accelerate a 1.6 x 10^{3} kg automobile forward at 2.0 m/s/s? 

401 
F = m * a 
N 
2) A baseball that has a mass of 0.14kg accelerates downwards at 9.8 m/s/s. What is the gravitational force acting upon the baseball? 

401 
F = m * a 
N 
3) A 3.2kg model airplane accelerates at 2.2 m/s/s. What is the net force acting on the airplane? 

415 
P = m * v 
Kgm/s 
4) Calculate the momentum of a 75 kg speed skater moving forward at 16 m/s 

415 
P = m * v 
Kgm/s 
5) Calculate the momentum of a 135 kg ostrich running north at 16.2 m/s. 

R 
D V =  T 
m/s 
6) A ball rolls down a 5m ramp in 11 s. What is its average velocity? 

R 
FVOV 
Km/s/s 
7) A rocket slows down from 7100 km/s to 1250 km/s in 12 seconds. What is its average acceleration? 
