Question 1

A car travels east for 100 m, then north for 100 m. What is the magnitude of the car's displacement from its starting point?

Accepted Answer

$$141\ \mathrm{m}$$

Question 2

Which of the following best describes the difference between a scalar and a vector quantity?

Accepted Answer

A vector has both magnitude and direction, while a scalar has only magnitude.

Question 3

A ball is thrown straight up with an initial velocity of $$10\ \mathrm{m/s}. $$Neglecting air resistance, what is the maximum height reached by the ball? (Use $$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$5.1\ \mathrm{m}$$

Question 4

A box of mass $$5\ \mathrm{kg} is at $$rest on a horizontal surface. The coefficient of static friction between the box and the surface is $$0.4. $$What is the maximum force that can be applied horizontally before the box starts to move? (Use $$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$20\ \mathrm{N}$$

Question 5

A student stands on a rotating platform holding a dumbbell in each hand. If the student pulls the dumbbells inward, what happens to the angular velocity of the system, assuming no external torque?

Accepted Answer

The angular velocity increases.

Question 6

A $$2\ \mathrm{kg}$$ object moving at $$3\ \mathrm{m/s}$$ collides elastically with a stationary $$1\ \mathrm{kg}$$ object. What is the velocity of the $$1\ \mathrm{kg}$$ object after the collision?

Accepted Answer

$$4\ \mathrm{m/s}$$

Question 7

A spring with spring constant $$k = 200\ \mathrm{N/m} is $$compressed by $$0.1\ \mathrm{m}. $$What is the potential energy stored in the spring?

Accepted Answer

$$2\ \mathrm{J}$$

Question 8

A satellite orbits Earth in a circular path. Which of the following statements is true about the net force acting on the satellite?

Accepted Answer

The net force is directed toward the center of the Earth.

Question 9

A $$0.5\ \mathrm{kg}$$ mass attached to a spring oscillates with a period of $$2\ \mathrm{s}. $$What is the spring constant $$k$$?

Accepted Answer

$$4.93\ \mathrm{N/m}$$

Question 10

A $$10\ \mathrm{kg}$$ object is dropped from a height of $$5\ \mathrm{m}. $$What is its speed just before hitting the ground? (Neglect air resistance, $$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$9.9\ \mathrm{m/s}$$

Question 11

A fluid flows through a horizontal pipe that narrows from a wide section to a narrow section. According to the continuity equation, what happens to the speed of the fluid in the narrow section?

Accepted Answer

The speed increases.

Question 12

Which of the following is the correct expression for the work done by a constant force $$F$$ acting over a displacement $$d at an $$angle $$	heta to $$the direction of displacement?

Accepted Answer

$$W = Fd\cos	heta$$

Question 13

A $$3\ \mathrm{kg}$$ block slides down a frictionless incline of height $$2\ \mathrm{m}. $$What is its speed at the bottom?

Accepted Answer

$$6.26\ \mathrm{m/s}$$

Question 14

A rotating disk has a moment of inertia $$I$$ and angular velocity $$\omega. $$What is its rotational kinetic energy?

Accepted Answer

$$\frac{1}{2}I\$$omega^2$$

Question 15

A $$0.2\ \mathrm{kg}$$ ball moving at $$5\ \mathrm{m/s}$$ collides inelastically with a $$0.3\ \mathrm{kg}$$ ball at rest. What is the final velocity of the combined mass after the collision?

Accepted Answer

$$2.0\ \mathrm{m/s}$$

Question 16

A force of $$10\ \mathrm{N} is $$applied tangentially to a wheel of radius $$0.5\ \mathrm{m}. $$What is the torque produced?

Accepted Answer

$$5\ \mathrm{N\cdot m}$$

Question 17

Which of the following best describes Newton's Third Law?

Accepted Answer

For every action, there is an equal and opposite reaction acting on a different object.

Question 18

A pendulum swings with a period $$T. If $$the length of the pendulum is quadrupled, what happens to the period?

Accepted Answer

The period doubles.

Question 19

A $$1\ \mathrm{kg}$$ object moving at $$2\ \mathrm{m/s}$$ collides elastically with a $$2\ \mathrm{kg}$$ object at rest. What is the velocity of the $$1\ \mathrm{kg}$$ object after the collision?

Accepted Answer

$$-0.67\ \mathrm{m/s}$$

AP Physics 1: Algebra-Based – Course and Exam Description (Effective Fall 2024)

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