Newton’s Laws Review Chapters 3 and 4

Question 1 Which of Newton’s Laws says that “a net force acting on an object causes the object to accelerate in the direction of the force” ? A. Newton’s First Law B. Newton’s Second Law C.Newton’s Third Law D.Newton’s Fourth Law E.Newton’s Fifth Law

Question 1 Which of Newton’s Laws says that “a net force acting on an object causes the object to accelerate in the direction of the force” ? B. Newton’s Second Law

Question 2 Which equation can be used to represent Newton’s third law? A. F = m a B. V = I R C. v = f D. p = m v E. v = d / t

Question 2 Which equation can be used to represent Newton’s third law? D. p = m v

Question 3 Which of Newton’s Laws is known as the “Law of Inertia” ? A. Newton’s First Law B. Newton’s Second Law C. Newton’s Third Law D. Newton’s Fourth Law E. Newton’s Fifth Law

Question 3 Which of Newton’s Laws is known as the “Law of Inertia” ? A. Newton’s First Law

Question 4 What are the correct units for acceleration? A. m/s 2 B. N C. kg D. m/s E. s

Question 4 What are the correct units for acceleration? A. m/s 2

Question 5 A car is traveling east at 200 m/s. The car slows down to a stop in 10 s. What is the car’s final speed? A m/s B. 20 m/s C. 0 m/s D. 200 m/s 2 E. 10 s

Question 5 A car is traveling east at 200 m/s. The car slows down to a stop in 10 s. What is the car’s final speed? C. 0 m/s

Question 6 A 60 kg woman is jogging down the road at a speed of 6 m/s. What is her momentum? A. 60 kg m/s B. 10 kg m/s C. 6 kg m/s D. 360 kg m/s E. 66 kg m/s

Question 6 A 60 kg woman is jogging down the road at a speed of 6 m/s. What is her momentum? D. 360 kg m/s

Question 7 What is the tendency of an object to resist change in motion called? A. inertia B. acceleration C. distance D. terminal velocity E. air resistance

Question 7 What is the tendency of an object to resist change in motion called? A. inertia

Question 8 What is rate of acceleration due to gravity? A. 50 m/s 2 B. 5 m/s 2 C. 9.8 m/s 2 D. 98 m/s 2 E. 32 m/s 2

Question 8 What is rate of acceleration due to gravity? C. 9.8 m/s 2

Question 9 A 90 kg man goes to the moon. What happens to his mass? A. Goes up B. Goes down C. Remains the same D. Changes color E. Disappears

Question 9 A 90 kg man goes to the moon. What happens to his mass? C. Remains the same

Question 10 A girl pulls on a 20 kg cart and accelerates it 2 m/s 2. How much force is she applying? A. 20 N B. 2 N C. 10 N D. 40 N E. 0 N

Question 10 A girl pulls on a 20 kg cart and accelerates it 2 m/s 2. How much force is she applying? D. 40 N

Question 11 A 1 kg piece of paper and a 1 kg rock are dropped from the same height. Describe how gravity acts on them. A. Gravity pulls both down with the same force. B. Gravity pushes both up with the same force. C. Gravity pulls down more on the rock. D. Gravity pulls down more on the paper. E. Gravity has no effect.

Question 11 A 1 kg piece of paper and a 1 kg rock are dropped from the same height. Describe how gravity acts on them. A. Gravity pulls both down with the same force.

Question 12 How are speed and velocity related? A. They are exactly the same. B. Speed tells how fast you are going, velocity only gives you the direction. C. They both tell you how fast you are going, but speed also gives the direction. D. They have nothing in common. E. They both tell you how fast you are going, but velocity also gives the direction.

Question 12 How are speed and velocity related? E. They both tell you how fast you are going, but velocity also gives the direction.

Question 13 What is the rate of change in position called? A. Speed B. Acceleration C. Time D. Distance E. Gravity

Question 13 What is the rate of change in position called? A. Speed

Question 14 A ruby-throated hummingbird flies from one flower to another with a speed of 10 m/s. If it can make the travel in 30 seconds, how far away are the two flowers? A. 30 m B. 10 m C. 3 m D. 300 m E. 40 m

Question 14 A ruby-throated hummingbird flies from one flower to another with a speed of 10 m/s. If it can make the travel in 30 seconds, how far away are the two flowers? D. 300 m

Question 15 Jack enjoys running for exercise. On a cool, sunny morning, he can run 2000 meters in 400 seconds if he runs west, away from the sun. At what velocity is Jack able to run? A. 5 m/s B. 5 m/s west C. 80,000 m/s D. 80,000 m/s west E m/s

Question 15 Jack enjoys running for exercise. On a cool, sunny morning, he can run 2000 meters in 400 seconds if he runs west, away from the sun. At what velocity is Jack able to run? B. 5 m/s west

Question 16 If it takes 5 minutes to run from one end of a 1000 meter road to the other, how many seconds does it take to get there? A. 300 s B. 200 s C s D. 3.3 s E s

Question 16 If it takes 5 minutes to run from one end of a 1000 meter road to the other, how many seconds does it take to get there? A. 300 s

Question 17 Which equation can be used to express Newton’s second law of motion? A. F = m a B. V = I R C. v = f D. p = m v E. v = d / t

Question 17 Which equation can be used to express Newton’s second law of motion? A. F = m a

Question 18 A well-trained jogger can run a 1000 meter relay race in 200 seconds. At what speed can the jogger run? A m/s B. 5 m/s C. 200 m/s D. 5 m/s east E. 200,000 m/s

Question 18 A well-trained jogger can run a 1000 meter relay race in 200 seconds. At what speed can the jogger run? B. 5 m/s

Question 19 In the equation: a =  v / t what does  v represent? A. Average velocity B. Total velocity C. V final – V initial D. V final + V initial E. V initial - V final

Question 19 In the equation: a =  v / t what does  v represent? C. V final – V initial

Question 20 In the equation F = m a, what are the units for mass? A. kg m/s 2 B. N C. m/s 2 D. m/s E. kg

Question 20 In the equation F = m a, what are the units for mass? E. kg

Question 21 What distance can a ball roll across a floor if it is pushed with a speed of 100 m/s and is allowed to roll for 10 seconds? (Ignore possible friction.) A m B. 10 m C. 110 m D. 0.1 m E. 0 m

Question 21 What distance can a ball roll across a floor if it is pushed with a speed of 100 m/s and is allowed to roll for 10 seconds? (Ignore possible friction.) A m

Question 22 A person is exercising by running at a constant speed of 10 m/s. If she can run for 20 minutes, what distance could she travel? A. 0.5 m B. 2 m C. 200 m D m E. 12,000 m

Question 22 A person is exercising by running at a constant speed of 10 m/s. If she can run for 20 minutes, what distance could she travel? E. 12,000 m

Question 23 Kirsten is running down the road at 9 m/s. She has a total mass of 60 kg. Tobey is jogging down the same road at a speed of 8 m/s. He has a mass of 70 kg. Who has the greater momentum? A. Tobey with 540 kg m/s B. Kirsten with 540 kg m/s C. They have the same momentum. D. Tobey with 560 kg m/s E. Kirsten with 560 kg m/s

Question 23 Kirsten is running down the road at 9 m/s. She has a total mass of 60 kg. Tobey is jogging down the same road at a speed of 8 m/s. He has a mass of 70 kg. Who has the greater momentum? D. Tobey with 560 kg m/s

Question 24 A 10,000 kg minivan is driving down a road that is 2000 meters long. If the minivan is able to drive the entire length of the road in 10 seconds, what is its momentum? A. 10,000 kg m/s B. 200 kg m/s C. 2,000,000 kg m/s D. 100,000 kg m/s E kg m/s

Question 24 A 10,000 kg minivan is driving down a road that is 2000 meters long. If the minivan is able to drive the entire length of the road in 10 seconds, what is its momentum? C. 2,000,000 kg m/s

Question 25 A train is riding through a station at 10 m/s. After passing the station, it speeds up to its maximum speed of 135 m/s. It takes 1 minute for the train to reach its maximum speed. What is the final speed? A. 125 m/s B m/s C. 2.1 m/s D. 135 m/s E. 0 m/s

Question 25 A train is riding through a station at 10 m/s. After passing the station, it speeds up to its maximum speed of 135 m/s. It takes 1 minute for the train to reach its maximum speed. What is the final speed? D. 135 m/s

Question 26 A 1 kg wood block and a 1 kg sheet of paper are released from the same height at the same time. Gravity pulls on both objects equally, but the wood block hits the ground first. Why? A. The wood block weighs more. B. Friction pulls the block downward. C. Air resistance holds the paper up. D. The paper is less affected by air resistance. E. An antigravity field surrounds the paper.

Question 26 A 1 kg wood block and a 1 kg sheet of paper are released from the same height at the same time. Gravity pulls on both objects equally, but the wood block hits the ground first. Why? C. Air resistance holds the paper up.

Question 27 Why is a seatbelt important to wear in a car crash? A. Without it, a person’s inertia would send him or her forward into the windshield. B. With it, the person’s mass becomes “part” of the car. C. With it, there is less chance of hitting the windshield. D. All three: A, B and C. E. None of these.

Question 27 Why is a seatbelt important to wear in a car crash? D. All three: A, B and C.

Question 28 A 20 N force is applied to a ball. If the ball has a mass of 4 kg, how fast will it accelerate? A. 8 m/s 2 B. 5 m/s 2 C. 80 m/s 2 D. 0 m/s 2 E. 24 m/s 2

Question 28 A 20 N force is applied to a ball. If the ball has a mass of 4 kg, how fast will it accelerate? B. 5 m/s 2

Question 29 A man weighs 98 N. What is his mass? (Remember: the acceleration due to gravity is 9.8 m/s 2 ) A. 10 kg B. 0.1 kg C. 960 kg D. 0 kg E. 1 kg

Question 29 A man weighs 98 N. What is his mass? (Remember: the acceleration due to gravity is 9.8 m/s 2 ) A. 10 kg

Question 30 A car is traveling at a constant speed of 20 m/s down a road that is 100 m long. How long will it take for the car to reach the end of the street? A. 5 s B s C. 200 s D. 120 s E. 0.2 s

Question 30 A car is traveling at a constant speed of 20 m/s down a road that is 100 m long. How long will it take for the car to reach the end of the street? A. 5 s