Question 1

A car accelerates uniformly from rest at $$2.8\ \mathrm{m/s^2$}. $$How much time does it take to reach a speed of $$7.0\ \mathrm{m/s}$$?

Accepted Answer

$$2.5\ \mathrm{s}$$

Question 2

A $$0.232\ \mathrm{kg}$$ bead slides down a frictionless curved slide from a height of $$10.2\ \mathrm{m}. $$What is its speed at the bottom?

Accepted Answer

$$14.2\ \mathrm{m/s}$$

Question 3

A $$1.5\ \mathrm{kg}$$ mass is suspended from a spring with a spring constant $$k = 107.6\ \mathrm{N/m}. $$What is the period of oscillation?

Accepted Answer

$$0.75\ \mathrm{s}$$

Question 4

A $$56.3\ \mathrm{kg}$$ skater moving at $$11.9\ \mathrm{m/s}$$ collides and sticks to a stationary skater of equal mass. What is their final speed?

Accepted Answer

$$5.95\ \mathrm{m/s}$$

Question 5

A $$76.8\ \mathrm{kg}$$ ice skater moves at $$5.08\ \mathrm{m/s}$$ and grabs a rope tied to a pole, moving in a circle of radius $$0.596\ \mathrm{m}. $$What is the tension in the rope?

Accepted Answer

$$3,325\ \mathrm{N}$$

Question 6

A $$0.837\ \mathrm{kg}$$ mass is attached to a spring with force constant $$8.0\ \mathrm{N/m}$$ and oscillates on a frictionless surface. What is the period of oscillation?

Accepted Answer

$$2.04\ \mathrm{s}$$

Question 7

A $$1.2\ \mathrm{kg}$$ physics book has dimensions $$0.26\ \mathrm{m} 	imes 0.21\ \mathrm{m} 	imes 0.039\ \mathrm{m}$$ and weighs $$18\ \mathrm{N}. $$What is its density?

Accepted Answer

$$867.7\ \mathrm{kg/m^3$}$$

Question 8

A $$0.35\ \mathrm{m^3$}$$ container holds $$6.2$$ moles of argon gas at $$22^\circ\mathrm{C}. $$What is the internal energy of the gas? (Use $$R = 8.314\ \mathrm{J/(mol\cdot K)})$$

Accepted Answer

$$22,810.9\ \mathrm{J}$$

Question 9

A $$0.6\ \mathrm{m}$$ long copper wire is heated from $$5^\circ\mathrm{C} to$$ $$30^\circ\mathrm{C}. If $$the coefficient of linear expansion is $$17.7 	imes 10$$^{-6}$$\ \mathrm{K}^{-1}$$, what is the change in length?

Accepted Answer

$$0.00027\ \mathrm{m}$$

Question 10

A $$1.5\ \mathrm{kg}$$ object is attached to a string and swung in a horizontal circle of radius $$2.0\ \mathrm{m} at a $$speed of $$4.0\ \mathrm{m/s}. $$What is the tension in the string?

Accepted Answer

$$12.0\ \mathrm{N}$$

Question 11

A $$2.0\ \mathrm{kg}$$ block slides down a frictionless incline of height $$5.0\ \mathrm{m}. $$What is its speed at the bottom?

Accepted Answer

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

Question 12

A $$0.5\ \mathrm{kg}$$ sample of water is heated from $$20^\circ\mathrm{C} to$$ $$23^\circ\mathrm{C}. $$How much energy is required? (Specific heat of water $$= 4186\ \mathrm{J/(kg\cdot C)})$$

Accepted Answer

$$6,279\ \mathrm{J}$$

Question 13

A $$1.8\ \mathrm{kg}$$ and a $$1.3\ \mathrm{kg}$$ mass are connected over a frictionless pulley (Atwood machine). What is the acceleration of the system? (Neglect pulley mass)

Accepted Answer

$$1.2\ \mathrm{m/s^2$}$$

Question 14

A $$0.33\ \mathrm{m}$$ amplitude wave interferes constructively with a $$0.15\ \mathrm{m}$$ amplitude wave. What is the maximum possible amplitude?

Accepted Answer

$$0.48\ \mathrm{m}$$

Question 15

A $$0.367\ \mathrm{kg}$$ object attached to a spring oscillates with a period of $$0.367\ \mathrm{s}. If $$the total energy is $$2.77\ \mathrm{J}$$, what is the force constant $$k of $$the spring?

Accepted Answer

$$107.6\ \mathrm{N/m}$$

Question 16

A $$1.2\ \mathrm{kg}$$ book is placed on a table. If the area of contact is $$0.024\ \mathrm{m^2$}$$, what is the pressure exerted by the book? (Take $$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$490\ \mathrm{Pa}$$

Question 17

A $$0.61\ \mathrm{kg}$$ sample of copper at $$17^\circ\mathrm{C}$$ absorbs $$10,600\ \mathrm{J} of $$energy. What is its final temperature? (Specific heat of copper $$= 387\ \mathrm{J/(kg\cdot C)})$$

Accepted Answer

$$61.9^\circ\mathrm{C}$$

Question 18

A $$2.0\ \mathrm{kg}$$ object is dropped from a height of $$20\ \mathrm{m}. $$Ignoring air resistance, what is its speed just before hitting the ground?

Accepted Answer

$$19.8\ \mathrm{m/s}$$

Comprehensive Study Notes: Foundations of College Physics

Study Guide - Practice Questions

Study Guide - Flashcards