Newton’s Laws Forces and Motion

A force that is applied by gravity to an object Normal Force Weight Natural Force Friction Tension None of These [Default] [MC Any] [MC All]

Any force applied to an object by a surface Tension Natural Force Weight Normal force Balanced force None of These [Default] [MC Any] [MC All]

A force that is applied to an object through a string, rope, or chain is called… Friction Natural Force Normal Force Net Force Tension None of these [Default] [MC Any] [MC All]

A force that resists the motion of an object is called… Natural force Friction Weight Normal Force Applied Force None of these [Default] [MC Any] [MC All]

Which direction does weight act? To the right To the left North South Up Down At some angle to the horizontal [Default] [MC Any] [MC All]

What direction does the friction force act? Perpendicular to the surface in the same direction as the motion. Parallel to the surface in the same direction as the motion. Perpendicular to the surface in the opposite direction of the motion. Parallel to the surface in the opposite direction of the motion. At some angle to the surface not related to the motion. [Default] [MC Any] [MC All]

What direction does the Normal force act? Perpendicular to the surface pointing toward the surface. Perpendicular to the surface pointing away from the surface. Parallel to the surface pointing in the direction of motion. Parallel to the surface pointing opposite the direction of motion. At some angle to the surface unrelated to the motion. [Default] [MC Any] [MC All]

Adding all of the force magnitudes together Net force can be calculated which of the following ways. (Choose all that apply.) Adding all of the force magnitudes together Adding all of the force vectors together Multiplying mass times acceleration Multiplying mass times velocity Dividing mass by acceleration Dividing mass by velocity [Default] [MC Any] [MC All]

Friction depends on what factors? Choose all that apply. Weight Normal force Applied force Surface textures Surface Area None of these [Default] [MC Any] [MC All]

Newton’s 1st Law is best summarized as… Action-Reaction Unbalanced Forces Inertia Gravity None of these [Default] [MC Any] [MC All]

Newton’s 3rd Law can be best summarized as … Action-Reaction Unbalanced Forces Inertia Gravity None of these [Default] [MC Any] [MC All]

What quantity ties forces acting on an object and the motion of the object together? Velocity Net force Normal force Mass Acceleration [Default] [MC Any] [MC All]

Quadruple the original Becomes half of the original What happens to the acceleration of a given object if the Net Force acting on it is doubled? Stays the same Double the original Quadruple the original Becomes half of the original Becomes one-quarter of the original [Default] [MC Any] [MC All]

Quadruple the original Becomes half of the original What happens to the acceleration if the Force remains constant and the mass is doubled? Stays the same Double the original Quadruple the original Becomes half of the original Becomes one-quarter of the original [Default] [MC Any] [MC All]

Yes, they cancel each other out If Action-Reaction force pairs are equal and opposite, are they balanced forces? Yes, they cancel each other out No, because they are acting on different objects The answer depends on the specific problem [Default] [MC Any] [MC All]

An object has a mass of 65 grams on Earth An object has a mass of 65 grams on Earth. How much mass does it have on the moon? (g=1.6 m/s2) 0.104 g 0.638 g 6.63 g 40.6 g 65 g 104 g 638 g [Default] [MC Any] [MC All]

An object has a mass of 65 grams on Earth. How much does it weigh? [Default] [MC Any] [MC All]

An object has a mass of 65 grams on Earth An object has a mass of 65 grams on Earth. How much does it weigh on the moon? (g=1.6 m/s2) 0.10 N 0.65 N 6.50 N 41 N 65 N 100 N 650 N [Default] [MC Any] [MC All]

A 6 kg bowling ball is given an acceleration of 2 m/s2 A 6 kg bowling ball is given an acceleration of 2 m/s2. How much force was required? 2 N 3 N 6 N 9.81 N 12 N None of these [Default] [MC Any] [MC All]

A large dog weighs 400 N. What is the mass of the dog? 10 kg 40 kg 400 kg 4000 kg None of these [Default] [MC Any] [MC All]

What is the Net Force on a 20N stone if you apply an upward force of 27 N on it? 7 N, down 20 N, up 20 N, down 27 N, up 27 N, down 47 N, up 47 N, down None of these [Default] [MC Any] [MC All]

All of the horizontal forces are balanced Which statements below are true if an object is said to be in “equilibrium”? (Choose all that apply) All of the horizontal forces are balanced All of the vertical forces are balanced Horizontal forces are balanced, but vertical forces are not balanced Vertical forces are balanced, but horizontal forces are not balanced Net Force is zero None of these are true statements [Default] [MC Any] [MC All]

A 15 kg crate is pushed across a level floor by an applied force of 100 N. What is the normal force acting on the crate? 0 N 1.5 N 35 N 51.5 N 147 N None of these Hint: Draw the force diagram! 15 kg [Default] [MC Any] [MC All]

A 15 kg crate is pushed across a level floor by an applied force of 100 N. What is the vertical net force acting on the crate? 0 N 35 N 48.5 N 51.5 N 147 N Hint: Draw the force diagram! 15 kg [Default] [MC Any] [MC All]

A 15 kg crate is pushed across a level floor by an applied force of 100 N. If the force of friction is 51.5N, what is the horizontal net force acting on the crate? 0 N 35 N 48.5 N 51.5 N 147 N Hint: Draw the force diagram! 15 kg [Default] [MC Any] [MC All]

A 15 kg crate is pushed across a level floor by an applied force of 100 N. If the force of friction is 51.5N, what is the acceleration on the crate? 0 m/s2 0.33 m/s2 3.23 m/s2 3.43 m/s2 9.81 m/s2 Hint: Draw the force diagram! 15 kg [Default] [MC Any] [MC All]