Essay on Velocity and Speed Acceleration Potential

Submitted By rcooklin

Words: 316

Pages: 2

Open Document

Checkpoint
Do you know what units each of these are measured in?
Force
Weight
Mass
Distance
Time
Speed
Acceleration
Potential energy
Kinetic energy

Do you know the equations to calculate the following?

Speed =

Acceleration =

Weight =

GPE (Ep) =

Energy transferred =

Work =

Power =

Kinetic Energy =

Forces questions
1. A racing car was travelling at 45 m/s when the driver applied the brakes. Below is a velocity-time graph showing the velocity of the car during braking.

What is the cars speed 5 seconds after the brakes are applied?

Calculate the rate at which the velocity decreases (deceleration or acceleration)

Calculate the braking force if the mass of the car is 600 kg.

Calculate the braking distance.

2. This graph shows the braking distance for a van travelling at various speeds.

The van driver thinks that if he doubles the speed he should double the braking distance. Use the graph to explain whether he is right or wrong,

What would his braking distance be for his van if he was travelling at 16 m/s?
The van is driving at 30 m/s and a dog runs into the road ahead.

The driver applies the brakes. Why is his stopping distance more than 120m?
The braking distances in the graph are applicable in fair weather. How would braking distances be affected if the roads were icy? Explain your answer.

3. A sky diver jumps from an aeroplane. She jumps a long way before she opens her parachute.

The

Orbit and Gravitational Field Essay

Weight is the force due to gravity acting on a mass. * Mass will not change where the acceleration due to gravity is different, but the weight will change. F = mg F = Force m = mass, g = acceleration due to gravity. This formula is derived from Newton’s Second Law of Motion, F=ma * Explain that a change in gravitational potential energy is related to work done * Gravitational Potential Energy (Ep) is the energy that is stored in a body of mass due to its position within a…

Words 3855 - Pages 16

Flyer Research Paper

constant speed in the same direction. Complicated motion is when two or more types of motion are combined such as rotary and linear motion. The most common types of motion used in cheerleading is linear motion, rotary motion, irregular motion and complicated motion. Another aspect of motion is inertia, which is the resistance when there is a change in…

Words 1323 - Pages 6

Essay about Physical Science Study Guide

-Formula to calculate speed, distance or time is (s=d/t) -The velocity of an object must have both a speed and direction Velocity is the speed and direction in which an object moves. If you are trying to get out of the way of a storm, you would need to know the velocity in which it was moving. The formula for velocity is (v=d/t) Velocity determines the direction of motion and speed does not. -The distance and object travels per unit of time is speed. The speed that you read from your…

Words 648 - Pages 3

Need to Know: Physics Essay

Linear Motion: Variables to know - x or y = Distance (m) vi = Initial Velocity (m/s) vf = Final Velocity (m/s) a = Acceleration (m/s^2) t = Time (sec) Formulas - x=(vi+vf2)t Vector - Measurement with direction Examples: displacement, velocity, weight Designated by an arrow above a variable Scalar - Measurement without direction Examples: distance, speed, mass Projectile Motion: Types of questions: Kicking/throwing an object through the air. Objects falling/rolling off of a level…

Words 1147 - Pages 5

Winter Break Homework

compare and contrast potential and kinetic energy a) Create a fictional cartoon that shows the differences between potential energy and kinetic energy b) The comic strip needs a minimum of 4 slides or boxes. Page 3 – Tek 6.8(C) Calculate average speed using distance and time measurements a) Make a distance vs. time graph with two runners on it. b) Have runner A running at a constant speed c) Runner B should stop for at least 5 second before finishing the race d) Calculate the speed for both runners.…

Words 458 - Pages 2

The Kilowatt Hour: A Unit Of Energy

consumption of states or nations, can be expressed in gigawatt hours (GWh), where 1 GWh = 1,000 MWh = 106 kWh. 4) The kilowatt-hour is rarely used to express energy in any form other than electrical. A quantity of gasoline, oil, or coal contains potential energy that is liberated when the fuel is burned. The heat energy resulting from combustion of such fuels is usually expressed in joules according to the International System of Units (SI) or in British thermal units (Btus) according to the foot-pound-second…

Words 2346 - Pages 10

Physics Space Essay

Explain that a change in gravitational potential energy is related to work done The gravitational potential energy at a height is equal to the work done in raising it to that height. Consider: W = F x d Therefore, W = Fg x d (where Fg is the weight of the object) Fg = mg (as weight of the object = mass x acceleration due to gravity) Therefore, W = mg x d Therefore, W = m x g x h (h is the distance the object has been moved) * Define gravitational potential energy as the work done to move an…

Words 2768 - Pages 12

Acceleration and the Human Body Essay

Acceleration and the Human Body Benjamin Descartes Everglades University ASC3471 Physiology of Flight Mr. Kirk Webster Abstract As far as any one individual can remember, as a child they loved going fast. There is that brilliance of feeling oneself being propelled forward, and their weight being caressed in a seat. This is a sensation felt in many vehicles, cars, high speed motor boats, motorcycles and last but not least the aircraft and spaceship. In the world of flying,…

Words 1410 - Pages 6

physics 12 Essay

I. Kinematics: vectors, velocity, and displacement II. Find average velocity on a position-- time graph: Average speed is total distance travelled / total time III. Interpret a kinematics graph IV. Finding final or initial velocity of an object accelerating uniformly: when a=0 then initial and final must be equal to each other V. What is meant by negative velocity or negative acceleration: You are slowing down or going in the opposite direction VI. determine net force on an object: kinda…

Words 397 - Pages 2

AS level Physics Materials/Mechanics revision notes Essay

(A) Kelvin (K) Derived quantities and units: Formula Derived unit Unit Speed= Distance/Time Ms-1 Acceleration= velocity/time Ms-2 Force =mass X acceleration Kgms-2 Newtons Pressure = force/area Kgm-1s-1 Pascals Work done (energy transfer)= force X distance Kgm2s-2 Joules Power = work done/time Kgm2s-3 Watts Charge= current x time As Coulombs Potential difference = work done/charge Kgm2s-3A-1 Volts Resistance = potential difference/ current Kgm2s-3A-2 Ohms A physical quantity is something…

Words 2105 - Pages 9