Physics quizzes every 2nd picture should be a new quiz
Apathy31
1. When do we break mg into components?
2. An object is attached to a string and sits on a table. I pull on the string to the right. The object moves right at constant speed. On a free body for the object, why don’t we include FH, the force of my hand on the object?
3. An object is attached to a string and sits on a table. I pull on the string to the right. The object moves right at constant speed. Is there a friction force on the object? Explain briefly why or why not.
4. An airplane passenger dangles her watch from a string while the jet takes off for 18 s. The free body diagram is shown to the left. What is the vertical acceleration of the watch?
5. An airplane passenger dangles her watch from a string while the jet takes off for 18 s. The free body diagram is shown to the left. Write an equation for Newton’s second law in the vertical direction.
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Your answer
6. An airplane passenger dangles her watch from a string while the jet takes off for 18 s. The free body diagram is shown to the left. Write an equation for Newton’s second law in the horizontal direction.
7. In Fnet = ma, what are the units of Fnet?
9. I throw a ball upward and to the right at an angle of 30 degrees above the horizontal. List all forces acting on the ball and their directions the instant after it leaves my hand.
Differnet Quizz
1. The units of mass are _____.
2. The net force is always in the direction of an object’s _____.
3. The acceleration of a fan cart is measured several times, each time adding mass to the top of the cart. Which variable in Newton’s Second Law is unchanged in this experiment?
4. On earth’s surface, the gravitational field is 10 N/kg. This means that on earth, 1 kg of mass _____.
5. A block sits on an inclined surface. Is the normal force on the block greater than, less than, or equal to the block’s weight?
6. A person weighing 500 N jumps off of a table and onto the floor. In the time he is landing on the floor, is the force of the floor on the person greater than, less than, or equal to 500 N?
7. A ball thrown upwards slows to a speed of 0 m/s before it falls back to Earth. At the instant its speed was 0 m/s, what is the ball’s acceleration?
8. An object has a weight of 30 N, and experiences a 50 N tension pulling upward. What force should be set equal to ma? Answer with a numerical value.
9. An object has a weight of 30 N, and experiences a 50 N tension pulling upward. What is the object’s mass?
10. An object has a weight of 30 N, and experiences a 50 N tension pulling upward. Which way is the object moving?
