Question 1

A car accelerates from rest at a constant rate of $$2\ \mathrm{m/s^2$}$$ for $$5\ \mathrm{s}. $$What is the final velocity of the car?

Accepted Answer

$$10\ \mathrm{m/s}$$

Question 2

A ball is thrown vertically upward with an initial velocity of $$15\ \mathrm{m/s}. $$Ignoring air resistance, what is the maximum height reached by the ball? (Use $$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$11.5\ \mathrm{m}$$

Question 3

Which of the following best describes Newton's Second Law of Motion?

Accepted Answer

The net force on an object is equal to the mass of the object multiplied by its acceleration: $$F = ma$$

Question 4

A $$3\ \mathrm{kg}$$ object is moving at $$4\ \mathrm{m/s}$$ and collides with a stationary $$2\ \mathrm{kg}$$ object. If the collision is perfectly elastic, what is the velocity of the $$2\ \mathrm{kg}$$ object after the collision?

Accepted Answer

$$4.8\ \mathrm{m/s}$$

Question 5

A $$5\ \mathrm{kg}$$ block slides down a frictionless incline of height $$2\ \mathrm{m}. $$What is its speed at the bottom of the incline?

Accepted Answer

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

Question 6

A $$0.5\ \mathrm{kg}$$ pendulum bob swings with a maximum speed of $$2\ \mathrm{m/s}. $$What is its maximum kinetic energy?

Accepted Answer

$$1\ \mathrm{J}$$

Question 7

A $$10\ \mathrm{kg}$$ object is acted upon by a net force of $$30\ \mathrm{N}. $$What is its acceleration?

Accepted Answer

$$3\ \mathrm{m/s^2$}$$

Question 8

A $$2\ \mathrm{kg}$$ mass is attached to a spring with a spring constant $$k = 50\ \mathrm{N/m}. $$What is the period of oscillation?

Accepted Answer

$$1.26\ \mathrm{s}$$

Question 9

A $$1\ \mathrm{kg}$$ ball moving at $$5\ \mathrm{m/s}$$ strikes a wall and rebounds at $$-3\ \mathrm{m/s}. $$What is the change in momentum?

Accepted Answer

$$-8\ \mathrm{kg\cdot m/s}$$

Question 10

A $$0.2\ \mathrm{kg}$$ object is whirled in a circle of radius $$0.5\ \mathrm{m} at a $$speed of $$4\ \mathrm{m/s}. $$What is the centripetal force acting on the object?

Accepted Answer

$$6.4\ \mathrm{N}$$

Question 11

A $$60\ \mathrm{kg}$$ person stands on a scale in an elevator accelerating upward at $$2\ \mathrm{m/s^2$}. $$What does the scale read?

Accepted Answer

$$708\ \mathrm{N}$$

Question 12

A $$0.3\ \mathrm{kg}$$ ball is dropped from a height of $$2\ \mathrm{m}. $$What is its velocity just before hitting the ground? (Ignore air resistance)

Accepted Answer

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

Question 13

A $$2\ \mathrm{kg}$$ object moves in a circle of radius $$1\ \mathrm{m} at a $$constant speed of $$3\ \mathrm{m/s}. $$What is its angular velocity?

Accepted Answer

$$3\ \mathrm{rad/s}$$

Question 14

A $$0.5\ \mathrm{kg}$$ mass is attached to a string and swung in a horizontal circle of radius $$0.4\ \mathrm{m} at$$ $$2\ \mathrm{m/s}. $$What is the tension in the string?

Accepted Answer

$$5\ \mathrm{N}$$

Question 15

A $$1\ \mathrm{kg}$$ block is pushed across a rough surface with a coefficient of kinetic friction $$\mu_k = 0.3. If $$the normal force is $$9.8\ \mathrm{N}$$, what is the frictional force?

Accepted Answer

$$2.94\ \mathrm{N}$$

Question 16

A $$0.4\ \mathrm{kg}$$ object is dropped from rest and falls for $$3\ \mathrm{s}. $$What is its displacement during this time? (Ignore air resistance)

Accepted Answer

$$44.1\ \mathrm{m}$$

Question 17

A $$2\ \mathrm{kg}$$ block is attached to a spring and oscillates with a frequency of $$0.5\ \mathrm{Hz}. $$What is the spring constant $$k$$?

Accepted Answer

$$19.74\ \mathrm{N/m}$$

Question 18

A $$1\ \mathrm{kg}$$ object is moving at $$10\ \mathrm{m/s}$$ and comes to rest in $$2\ \mathrm{s}$$ due to a constant force. What is the magnitude of the force?

Accepted Answer

$$5\ \mathrm{N}$$

Question 19

A $$0.6\ \mathrm{kg}$$ mass is attached to a string and swung in a vertical circle of radius $$0.5\ \mathrm{m}. At $$the lowest point, its speed is $$4\ \mathrm{m/s}. $$What is the tension in the string at this point?

Accepted Answer

$$15.48\ \mathrm{N}$$

PHY 2053 Physics without Calculus I: Course Syllabus and Study Guide

Guida di studio - Domande di pratica

Study guide - Flashcard