Chapter Assessment Questions

What is the range of a projectile?

Question 1

Chapter

6

A. The total trajectory that the projectile travels.

B. The vertical distance that the projectile travels.

C. The horizontal distance that the object travels.

D. Twice the maximum height of the projectile.

Chapter Assessment Questions

Answer: C

Answer 1

Chapter

6

Reason: When a projectile is launched at an angle, the straight (horizontal) distance the projectile travels is known as the range of the projectile.

Chapter Assessment Questions

Define the flight time of a trajectory.

Question 2

Chapter

6

A. Time taken by the projectile to reach the maximum height.

B. The maximum height reached by the projectile divided by the magnitude of the vertical velocity.

C. The total time the projectile was in the air.

D. Half the total time the projectile was in the air.

Chapter Assessment Questions

Answer: C

Answer 2

Chapter

6

Reason: The flight time of a trajectory is defined as the total time the projectile was in the air.

Chapter Assessment Questions

Donna is traveling in a train due north at 30 m/s. What is the magnitude of the velocity of Donna with respect to another train which is running due south at 30 m/s?

Question 4

Chapter

6

A. 30 m/s + 30 m/s

B. 30 m/s − 30 m/s

C. 302 m/s + 302 m/s

D. 302 m/s − 302 m/s

Chapter Assessment Questions

Answer: A

Answer 4

Chapter

6

Reason: The magnitude of velocity of Donna relative to the ground is 30 m/s and the magnitude of velocity of another train relative to the ground is also 30 m/s.

Now, with this speed, if the trains move in the same direction, then the relative speed of both the trains will be zero.

However, in this case, since both the trains are moving in opposite directions, the relative speed (magnitude of the velocity) of Donna relative to another train is 30 m/s + 30 m/s.

Standardized Test Practice

1. A 1.6-m-tall girl throws a football at an angle of 41° from the horizontal and at an initial velocity of 9.4 m/s. How far away from the girl will it land?

Multiple Choice

Chapter

6

A. 4.5 m

B. 5.9 m

C. 8.9 m

D. 12 m

5. A jogger on a riverside path sees a rowing team coming toward him. If the jogger is moving at 10 km/h, and the boat is moving at 20 km/h, how quickly does the jogger approach the boat?

Multiple Choice

Chapter

6 Standardized Test Practice

A. 2.8 m/s

B. 8.3 m/s

C. 36 m/s

D. 108 m/s

6. What is the maximum height obtained by an apple that is slung from a slingshot at an angle of 78° from the horizontal with an initial velocity of 18 m/s?

Multiple Choice

Chapter

6 Standardized Test Practice

A. 0.70 m

B. 16 m

C. 32 m

D. 33 m

Standardized Test Practice

7. An orange is dropped at the same time a bullet is shot from a gun. Which of the following is true?

Multiple Choice

Chapter

6

A. The acceleration due to gravity is greater for the orange because the orange is heavier.

B. Gravity acts less on the bullet than on the orange because the bullet is moving so fast.

C. The velocities will be the same.

D. The two objects will hit the ground at the same time.

Standardized Test Practice

8. A colorfully feathered lead cannonball is shot horizontally out of a circus cannon 25 m/s from the high-wire platform on one side of a circus ring. If the high-wire platform is 52 m above the 80-m diameter ring, will the performers need to adjust their cannon (will the ball land inside the ring, or past it)?

Extended Answer

Chapter

6