1. A projectile launched at 20 m/s at an angle of 30 o lands on a level surface. How far away does it land? 0 of 30 1.40 meters 2.20 meters 3.34 meters 4.9.8 meters 5.17 meters

2. The magnitude of the centripetal acceleration. 0 of 30 1.a c =v/r 2 2.a c =r/v 3.a c =v 2 /r 2 4.a c =v 2 /r

3. The acceleration of an object in uniform circular motion: 0 of 30 1.Is zero 2.Points outward 3.Points to the center 4.Points in the direction the object is moving

4. A push or a pull 0 of 30 1.Acceleration 2.Pressure 3.Force 4.Mass

5. Forces are measured in: 0 of 30 1.Newtons 2.Kilograms 3.Pascals 4.m/s 2

6. On earth the force of gravity acting on a 4.5 kg object is 1.0.45 N 2.4.5 kg 3.45 N 4.450 N 0 of 30

7. What is the mass of an 18 kg object on earth? 0 of 30 1.1.8 kg 2.1.8 N 3.18 kg 4.180 N

8. If a 2.0 kg textbook were taken to the moon its mass there would be: 0 of 30 1.Significantly smaller than on earth. 2.Zero 3.Still 2.0 kg 4.Significantly larger than on earth

9. Which of the following is NOT a fundamental force of nature? 0 of 30 1.Weak Nuclear Force 2.Electromagnetic Force 3.Friction Force 4.Gravitational force

10. Newton’s first law states: 0 of 30 1.Moving things tend to slow down and stop if not acted on by a force. 2.Constant velocity motion is only possible if no forces act on an object. 3.This go in a straight line at constant speed when the net force is zero.

11. Tendency of an object to continue moving like it already was. 0 of 30 1.Density 2.Power 3.Force 4.Inertia

12. Things have more inertia if they have a greater: 0 of 30 1.Density 2.Volume 3.Mass 4.Free fall acceleration

13. Micro (  ) 0 of 30 1.x10 -9 2.x10 -6 3.x10 +3 4.x10 +12

14. A ball is thrown straight up. At its highest point its velocity is ____ and its acceleration is _____ 0 of 30 1.0, 0 2.0, 10 m/s 2 down 3.10 m/s, 0 4.10 m/s, 10 m/s 2 up

15. A 5.0 kg object experiences a forward force of 20.0 N and a backwards force of 5 N. The net force is: 0 of 30 1.50 N 2.25 N 3.75 N 4.15 N

16. A 5.0 kg object experiences a forward force of 20.0 N and a backwards force of 5 N. The acceleration is: 0 of 30 1.9.8 m/s 2 2.5.0 m/s 2 3.3.0 m/s 2 4.0.67 m/s 2

17. If the frictional force is 40 N and the normal force is 200 N the frictional coefficient is: 0 of 30 1.5.0 2.0.5 3.0.4 4.0.2

18. A horizontal force of 35 N causes a 2.0 kg object to accelerate at 2.5 m/s 2 across the floor. The net force is____. 0 of 30 1.35 N 2.20 N 3.5.0 N 4.0.0 N

19. A horizontal force of 35 N causes a 2.0 kg object to accelerate at 2.5 m/s 2 across the floor. The frictional force is____. 0 of 30 1.35 N 2.30 N 3.10 N 4.0 N

20. A horizontal force of 35 N causes a 2.0 kg object to accelerate at 2.5 m/s 2 across the floor. The coefficient of friction is____. 0 of 30 1.1.5 2.0.67 3.0.20 4.0.10

21. On earth 1.0 kg weighs 0 of 30 1.2.2 lbs 2.0.1 N 3.1.0 kg 4.2.54 lbs

22. If 2.0 kg weighs 8.0 N on the surface of a planet, the acceleration of a dropped object would be: 0 of 30 1.10 m/s 2 2.Depends on the mass 3.16 m/s 2 4.4.0 m/s 2

23. Equal to kg∙m/s 2. 0 of 30 1.Liters 2.Mph 3.Newtons 4.Watts

24. If a 140 kg football player collides with an opponent who is only 60 kg which player exerts a larger force? 0 of 30 1.The 140 kg player 2.The 60 kg player 3.The forces are equal in magnitude

25. An object will fall at constant speed 0 of 30 1.Once air resistance exerts a force equal to the weight of the object 2.Only on the moon 3.Only if it has a parachute or a propeller. 4.Only if there is no gravity

26. A 6.0 kg object traveling at 5.0 m/s strikes a 2.0 kg object that is initially at rest. What is the total momentum following the collision? 0 of 30 1. 11 kg m/s 2.75 kg m/s 3.30 kg m/s 4.Can not be determined

27. A solid block of metal measures 5 cm x 6 cm x 10 cm and has a mass of 1.8 kg. The density of the metal is: 0 of 30 1.3.0 g/cm 3 2.300 g/cm 3 3.6.0 g/cm 3 4.1.0 g/cm 3

28. Kepler determined that planets travel in ________ orbits. 0 of 30 1.Circular 2.Elliptical 3.Parabolic 4.Linear

29. Demonstrated that objects on earth experience a gravitational attraction? 0 of 30 1.Kepler 2.Newton 3.Galileo 4.Cavendish

30. Formulated three laws of planetary motion: 0 of 30 1.Galileo 2.Einstein 3.Kepler 4.Newton

31. What is the acceleration of a car going around a 100 m radius turn at a constant speed of 20 m/s? 0 of 30 1.0 m/s 2 2.10 m/s 2 3.0.20 m/ 2 4.4.0 m/s 2

32. A 6.0 kg object traveling at 5.0 m/s strikes a 2.0 kg object that is initially at rest. If the objects stick together, what is their speed following the collision? 1.5.0 m/s 2.3.75 m/s 3.2.5 m/s 4.0.0 m/s 0 of 30

33. A ball that is thrown straight up at 20 m/s reaches a maximum height of 0 of 30 1.10 m 2.20 m 3.40 m 4.80 m

34. What is the momentum of a 6.0 kg object traveling at 5.0 m/s? 0 of 30 1.11 kg m/s 2.75 kg m/s 3.30 kg m/s 4.1.2 kg m/s