Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

Physics Problems: Motion, Energy, and Electricity

10 Questions

0 Views

Physics Problems: Motion, Energy, and Electricity

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

In _______________ motion, an object moves in a straight line with a constant acceleration.

vertical

The motion of a thrown ball is an example of _______________ motion.

projectile

The law of _______________ of momentum states that the total momentum of a closed system remains constant over time.

conservation

The energy an object has due to its position or configuration is known as _______________ energy.

potential Signup and view all the answers

The energy associated with the movement of charged particles, such as electrons, is known as _______________ energy.

electrical Signup and view all the answers

Explain how the concept of potential energy is related to the vertical motion of an object.

The potential energy of an object is directly proportional to its height. As an object gains height, its potential energy increases and conversely, as it loses height, its potential energy decreases. Signup and view all the answers

A car accelerates uniformly from rest to a speed of 30 m/s in 5 seconds. Calculate the acceleration of the car.

To find the acceleration, use the equation a = Δv / Δt. Plugging in the values, a = (30 m/s - 0 m/s) / 5 s = 6 m/s². Signup and view all the answers

A cannonball is fired at an angle of 45° above the horizontal with an initial velocity of 50 m/s. Calculate the time of flight of the cannonball.

To find the time of flight, use the equation t = 2v₀sinθ / g. Plugging in the values, t = 2(50 m/s)sin(45°) / 9.8 m/s² = 7.07 seconds. Signup and view all the answers

A 2000 kg car traveling at 20 m/s collides with a stationary 3000 kg truck. Calculate the velocity of the system after the collision, assuming a completely inelastic collision.

To find the velocity, use the law of conservation of momentum. First, calculate the total momentum before the collision, then set it equal to the total momentum after the collision. Signup and view all the answers

A battery supplies a current of 2 A to a resistor of 10 Ω for 5 minutes. Calculate the total work done by the battery.

To find the total work, use the equation W = ∫VIdt. Plugging in the values, W = ∫(2 A)(10 V)dt = 600 J. Signup and view all the answers