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 10³ 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

Kg-m/s 

4) Calculate the momentum of a 75 kg speed skater moving forward at 16 m/s

415 

  P = m * v

Kg-m/s 

5)  Calculate the momentum of a 135 kg ostrich running north at 16.2 m/s.

R
e
v
i
e
w

            D

 V =    ----

             T

 m/s

6)  A ball rolls down a 5m ramp in 11 s. What is its average velocity?

 R
e
v
i
e
w

        FV-OV
A=   --------
            T

Km/s/s

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