1.   Complete this sentence “In the absence of air resistance, objects fall at constant_”      2.   A ball tossed vertically upward rises, reaches its highest point, and then falls back to its starting point. During this time the acceleration of the ball is always point in which direction?

     3.   When a basketball player jumps to make a shot, once the feet are off the floor.  What is the jumper's acceleration?

     4.   An object is dropped and falls freely to the ground with an acceleration of g. If it is thrown upward at an angle instead, its acceleration would be _

     5.   Compared to its weight on Earth, a 10-kg object on the moon will weigh (more/less/same)

     6.   Compared to its mass on Earth, the mass of a 10-kg object on the moon is (more/less/same)

     7.   The mass of a sheep that weighs 110 N is_

     8.   A 15-N force and a 45-N force act on an object in opposite directions. What is the net force on the object?

     9.   How much does a 3.0-kg bag of bolts weigh?

   10.   The acceleration produced by a net force on an object is

   11.   When a woman stands with two feet on a scale, the scale reads 280 N. When she lifts one foot, the scale reads (more/less/equal) to 280

   12.   An apple weighs 1 N. The net force on the apple when it is in free fall is

   13.   A girl pulls on a 10-kg wagon with a constant force of 20 N. What is the wagon's acceleration?

   14.   A tennis ball and a solid steel ball with the same diameter are dropped at the same time. Which ball has the greater force acting on it?

   15.   A tennis ball and a solid steel ball with the same diameter are dropped at the same time. In the absence of air resistance, which ball has the greater acceleration?

   16.   You pull horizontally on a 50-kg crate with a force of 450 N and the friction force on the crate is 250 N. The acceleration of the crate is

   17.   Which of the following situations is impossible?
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