Download quiz practice worksheet

Quiz Practice Worksheet
1. What is the force acting on an object with a mass of 24g and an acceleration of 6.25 m/s2?
2. What is the mass of a falling rock if it produces a force of 170N?
3. What force is required to bring a 1000Kg car to rest from a speed of 90km/hr in 45 meters?
4. A rifle bullet which travels at 360 m/s, strikes a block of wood that is fastened down so as to
not move. The bullet penetrates to a depth of 0.1 m. The mass of the bullet is 1.8g. What is
the force exerted by the bullet?
5. A weight lifter with a mass of 132 Kg is standing on a floor supporting a large dumbbell. The
dumbbell has a weight of 450N, what is the normal force applied?
6. An elevator travelling down has a velocity of 3m/s. It travels at this velocity for 45 seconds
before coming to a stop in 4m. Find the tension force in the cord holding the elevator if the
cumulative mass of the elevator and people is about 1445 Kg.
7. What is the force on an object that goes from 35 m/s to 85 m/s in 20 seconds and has a mass
of 148 kg?
8. Calculate the force on an object that has a mass of 12 kg and an acceleration of 4 m/s2 .
9. A 3,000-N force acts on a 200-kg object. The acceleration of the object is
10. What is the mass of an object that has a force of 89 N and an acceleration of 25 m/s2?
11. Newton's first law of motion is also called the law of ___
12. The statement "to every action there is an equal and opposite reaction" is ___.
13. The law that states that the unbalanced force acting on an object equals the object’s mass
times its acceleration is ____
14. Which of the following best illustrates balanced forces? a) a rock falling to the ground b) a
stretched rubber band being held between two hands c) a person lifting a heavy box off of
the ground d) a crash between a large truck and a train
15. _____ forces acting on an object cause the object to accelerate
16. Sally sits on a rock. Her weight is an action force. Describe its reaction force.
17. Why is your weight less on the Moon than on Earth, but your mass is the same?
18. When the forces acting on an object are ___, the net force is zero
19. A ball rolls off a desk at a speed of 3.0 m/s and lands 0.40 seconds later.
a) How far from the base of the desk does the ball land?
b) How high is the desk?
20. A slingshot is used to launch a stone horizontally from the top of a 20.0 meter cliff. The
stone lands 36.0 meters away.
a) At what speed was the stone launched?
21. Write the definition of each term in the definition column:
Vocabulary
Definition
term
Net force
Balanced forces
Unbalanced forces