1)  A constant F force brings a mass, m₁, to an acceleration of 3 m/s² and m₂ to 5 m/s².  What would the acceleration of m₁+m₂ be if the same F force was acting upon them ?

A) 15/8        B) 3        C) 5         D) 8/3         E) 8          

2)  The coefficient of friction (m) between a 4kg object and horizontal plane is 0.5.  If a 20 N force, which is 37⁰ to the horizontal, pulls this object, what would its acceleration be ? (g=10m/s²)

A) 0        B) 1/2         C) 1         D) 2          E) 3         

3)

In the first diagram, 1kg and 4kg objects are on a frictionless horizontal plane.  In the second diagram, these objects are on a plane which has a coefficient of friction of 0.1.  In both diagrams, the objects are being pulled by a 10 N force.  Since T₁ and T₂ are tension forces between the objects, what is T₁/T₂ ? (g=10 m/s²)

A) 1        B) 1/2         C) 2         D) 2/3         E) 1/4        

4)

In the diagram, m₁ and  m₂ are on a frictionless plane.  If T is 15 N, what would F be? (N)

A) 7.5       B) 10              C) 15               D) 20               E) 25        

5)

The objects in the diagrams above are on frictionless horizontal planes.   Using the information given, find the relation between a₁ and a₂ ?

A) a₁ = a₂         B) 2a₁ = a₂          C) 4a₁ = a₂         D) a₁ = 4a₂         E) a₁ = 3a₂        

6)

As seen in the diagram, a 4kg mass is going up a frictionless inclined plane.  How many meters would the object go up by the time it stops ? (g=10 m/s²) (m)

A) 1        B) 2         C) 3         D) 4         E) 6        

7)  A 5kg object is stationary on a frictionless horizontal plane.  If a 10 N force is acted upon this object for 2 seconds, what would its displacement be ? (m)

A) 1        B) 2         C) 3         D) 4        E)8