Where can I find the AP Physics C: Mechanics AP Physics C: Mechanics question paper 2025?

The full AP Physics C: Mechanics AP Physics C: Mechanics 2025 (Model questions) question paper is available free on Kekkei. You can read every question online and attempt the paper under timed exam conditions.

Does the AP Physics C: Mechanics 2025 paper come with solutions?

Yes. Every question on this AP Physics C: Mechanics past paper includes a step-by-step solution, plus instant AI feedback when you attempt it on Kekkei.

How many marks is the AP Physics C: Mechanics AP Physics C: Mechanics 2025 paper?

The AP Physics C: Mechanics AP Physics C: Mechanics 2025 paper carries 90 full marks and is meant to be completed in 90 minutes, across 10 questions.

Is practising this AP Physics C: Mechanics past paper free?

Yes — reading and attempting this AP Physics C: Mechanics past paper on Kekkei is completely free.

AP Physics C: Mechanics AP Physics C: Mechanics Practice Test 2025

AP Physics C: MechanicsModel questions

90marks

90min

10questions

This is the official AP Physics C: Mechanics AP Physics C: Mechanics question paper for 2025, as set in the Model questions examination. It carries 90 full marks and a time allowance of 90 minutes, across 10 questions. On Kekkei you can attempt this AP Physics C: Mechanics past paper online with a timer, get instant AI feedback and step-by-step solutions, and track the topics where you lose marks — completely free. Whether you are revising for your AP Physics C: Mechanics AP Physics C: Mechanics exam or solving previous years' question papers, this 2025 paper is a great way to practise under real exam conditions.

Level	AP Physics C: Mechanics
Subject	AP Physics C: Mechanics
Year	2025 BS
Exam session	Model questions
Full marks	90
Time allowed	90 minutes
Questions	10, all with step-by-step solutions

Multiple Choice

Select the best answer.

10 questions·1 mark each

1Multiple choice1 mark

$x(t)=2t^3-9t^2+12t$ . When is particle at rest?

a
$t=1$ s only
b
$t=2$ s only
c
$t=1$ s and $t=2$ s
d
$t=3$ s

Correct answer: c

$t=1$ s and $t=2$ s

$v(t)=6t^2-18t+12=6(t-1)(t-2)=0$ at $t=1$ and $t=2$ s.

The correct answer is (c).

kinematicscalculus-based

2Multiple choice1 mark

Block slides down incline angle $\theta$ , $\mu_k$ . Acceleration?

a
$g\sin\theta$
b
$g(\sin\theta-\mu_k\cos\theta)$
c
$g(\cos\theta-\mu_k\sin\theta)$
d
$g(\sin\theta+\mu_k\cos\theta)$

Correct answer: b

g(\sin\theta-\mu_k\cos\theta)

$a=g(\sin\theta-\mu_k\cos\theta)$ .

The correct answer is (b).

newton-lawsfriction

3Multiple choice1 mark

$F(x)=6x^2$ N from $x=0$ to $x=3$ m. Work?

a
18 J
b
27 J
c
36 J
d
54 J

Correct answer: d

54 J

$W=\int_0^3 6x^2 dx=2x^3|_0^3=54$ J.

The correct answer is (d) 54 J.

work-energyvariable-force

4Multiple choice1 mark

0.15 kg baseball at 40 m/s hit back at 50 m/s, contact 0.002 s. Avg force?

a
1350 N
b
4500 N
c
6750 N
d
7500 N

Correct answer: c

6750 N

$\Delta p=0.15(50+40)=13.5$ . $F=13.5/0.002=6750$ N.

The correct answer is (c) 6750 N.

momentumimpulse

5Multiple choice1 mark

Solid disk ( $I=\frac{1}{2}MR^2$ ) rolls without slipping down incline. Acceleration?

a
$g\sin\theta$
b
$\frac{2}{3}g\sin\theta$
c
$\frac{1}{2}g\sin\theta$
d
$\frac{5}{7}g\sin\theta$

Correct answer: b

\frac{2}{3}g\sin\theta

$a=g\sin\theta/(1+1/2)=\frac{2}{3}g\sin\theta$ .

The correct answer is (b).

rotationmoment-of-inertia

6Multiple choice1 mark

Spring-mass, max displacement $A$ . Speed at equilibrium?

a
$A\sqrt{k/m}$
b
$A\sqrt{m/k}$
c
$\frac{1}{2}A\sqrt{k/m}$
d
$2A\sqrt{k/m}$

Correct answer: a

A\sqrt{k/m}

$v=A\sqrt{k/m}$ .

The correct answer is (a).

oscillationsspring-mass

7Multiple choice1 mark

Satellite at height $h$ above Earth (radius $R$ , surface $g$ ). Orbital speed?

a
$\sqrt{gR}$
b
$\sqrt{g(R+h)}$
c
$\sqrt{gR/(R+h)}$
d
$\sqrt{gR^2/(R+h)}$

Correct answer: d

\sqrt{gR^2/(R+h)}

$v=\sqrt{gR^2/(R+h)}$ .

The correct answer is (d).

gravitationorbital-mechanics

8Multiple choice1 mark

Atwood: $m_1=5$ kg, $m_2=3$ kg. $a$ ? ( $g=10$ )

a
$1.25\;\text{m/s}^2$
b
$2.5\;\text{m/s}^2$
c
$5.0\;\text{m/s}^2$
d
$3.75\;\text{m/s}^2$

Correct answer: b

$2.5\;\text{m/s}^2$

$a=(5-3)(10)/(5+3)=2.5\;\text{m/s}^2$ .

The correct answer is (b).

newton-lawsatwood-machine

9Multiple choice1 mark

$U(x)=3x^2-2x+5$ . Force at $x=2$ ?

a
$$-10 $N$
b
$$10 $N$
c
$$-14 $N$
d
$$14 $N$

Correct answer: a

$$-10 $N$

$F=-dU/dx=-(6x-2)=-10$ N at $x=2$ .

The correct answer is (a) $-10$ N.

work-energypotential-energy

10Multiple choice1 mark

Skater: $\omega_i=2$ rad/s, $I_i=5$ , pulls in to $I_f=2$ . New $\omega$ ?

a
2 rad/s
b
4 rad/s
c
5 rad/s
d
10 rad/s

Correct answer: c

5 rad/s

$\omega_f=I_i\omega_i/I_f=10/2=5$ rad/s.

The correct answer is (c) 5 rad/s.

rotationangular-momentum

Frequently asked questions

Where can I find the AP Physics C: Mechanics AP Physics C: Mechanics question paper 2025?: The full AP Physics C: Mechanics AP Physics C: Mechanics 2025 (Model questions) question paper is available free on Kekkei. You can read every question online and attempt the paper under timed exam conditions.
Does the AP Physics C: Mechanics 2025 paper come with solutions?: Yes. Every question on this AP Physics C: Mechanics past paper includes a step-by-step solution, plus instant AI feedback when you attempt it on Kekkei.
How many marks is the AP Physics C: Mechanics AP Physics C: Mechanics 2025 paper?: The AP Physics C: Mechanics AP Physics C: Mechanics 2025 paper carries 90 full marks and is meant to be completed in 90 minutes, across 10 questions.
Is practising this AP Physics C: Mechanics past paper free?: Yes — reading and attempting this AP Physics C: Mechanics past paper on Kekkei is completely free.