Question 1

Which of the following quantities is a vector?

Accepted Answer

Displacement

Question 2

A car drives 8 km east, then 6 km west. What is the magnitude of its displacement?

Accepted Answer

$$2 	ext{ km}$$

Question 3

Which equation correctly relates average velocity $$v_{avg}$$, displacement $$\Delta x$$, and time interval $$\Delta t$$?

Accepted Answer

$$v_{avg} = \Delta x / \Delta t$$

Question 4

A runner completes a 400 m lap in 50 s, ending where they started. What is their average velocity?

Accepted Answer

$$0 	ext{ m/s}$$

Question 5

If the velocity of an object changes from $$2 	ext{ m/s} to$$ $$10 	ext{ m/s} in$$ $$4 	ext{ s}$$, what is its acceleration?

Accepted Answer

$$2 	ext{ m/s}^2$$

Question 6

Which statement best describes the difference between speed and velocity?

Accepted Answer

Velocity includes direction, speed does not.

Question 7

A ball is dropped from rest off a cliff. Ignoring air resistance, what is its velocity after $$3 	ext{ s}$$? (Take $$g = 9.8 	ext{ m/s}^2$$ downward)

Accepted Answer

$$29.4 	ext{ m/s}$$ downward

Question 8

Which of the following is true for an object in free fall (ignoring air resistance)?

Accepted Answer

Its acceleration is constant and directed downward.

Question 9

A car accelerates from $$5 	ext{ m/s} to$$ $$25 	ext{ m/s} in$$ $$4 	ext{ s}. $$What is the total distance traveled?

Accepted Answer

$$80 	ext{ m}$$

Question 10

Which equation gives the displacement $$\Delta x$$ for an object starting at $$x_0$$ with initial velocity $$v_0$$ and constant acceleration $$a$$ over time $$t$$?

Accepted Answer

$$\Delta x = v_0$ t + \frac{1}{2} a t^2$

Question 11

A projectile is launched horizontally from a cliff with speed $$v_0. $$What is its vertical acceleration during flight?

Accepted Answer

$$g$$ downward

Question 12

Which vector operation is used to find the total displacement when two displacement vectors $$\vec{A}$$ and $$\vec{B}$$ are combined?

Accepted Answer

Vector addition

Question 13

A box slides down a ramp at constant velocity. Which statement is true about the forces acting on the box?

Accepted Answer

The net force is zero.

Question 14

Which of the following is NOT a contact force?

Accepted Answer

Gravity

Question 15

A student pushes a crate across the floor at constant speed. What can be said about the frictional force?

Accepted Answer

It is equal to the applied force.

Question 16

Which equation represents the vector sum of two vectors $$\vec{A}$$ and $$\vec{B}$$?

Accepted Answer

$$\vec{A} + \vec{B}$$

Question 17

If an object moves with constant acceleration, which graph best represents its position vs. time?

Accepted Answer

A curve with increasing slope

Question 18

A car travels at $$20 	ext{ m/s}$$ for $$5 	ext{ s}$$, then at $$10 	ext{ m/s}$$ for $$10 	ext{ s}. $$What is the average speed for the entire trip?

Accepted Answer

$$12 	ext{ m/s}$$

Question 19

Which of the following best describes the normal force?

Accepted Answer

A force perpendicular to a surface

Kinematics and Forces: Structured Study Notes for College Physics

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