Acceleration

Chapter 6. Uniform Acceleration Problems: Speed and Velocity 6-1. A car travels a distance of 86 km at an average speed of 8 m/s. How many hours were required for the trip? [pic] [pic] t = 2.99 h 6-2. Sound travels at an average speed of 340 m/s. Lightning from a distant thundercloud is seen almost immediately. If the sound of thunder reaches the ear 3 s later, how far away is the storm? [pic] t = 58.8 ms 6-3. A small rocket leaves its pad and travels a

In our data, the least mass of 10 grams had an acceleration of -6.456 m/s2, followed by 50 grams with an acceleration of -9.133 m/s2, followed by 100 grams with an acceleration of -9.414 m/s2, lastly 200 grams had an acceleration of -9.614 m/s2. The group data did not have outliers in the average velocity values which were used to find the acceleration. In the grade data, 10 grams the data ranged from -6.430 to -9.605 m/s2, followed by 50 grams ranging from -6.949 to -9.795 m/s2, followed by 100

Introduction: “Acceleration is a vital law of motion that is described as “the rate of change of velocity per unit of time; Rate of change means the ratio of the amount of change divided by how much time it took to change.” (The Physics Classroom, 2016). This law of motion will be tested and displayed by rolling a car down a ramp and recording the acceleration of the car is it descends the ramp. The speed/velocity of the car will gradually increase by the same amount every second. The steeper the

The gravitational acceleration depends on only the mass of the gravitating object M and the distance d from it. Notice that the mass of the falling object m has been cancelled out.” (http://www.astronomynotes.com) “To calculate its average speed you divide the distance travelled by the time it takes to travel that distance. The speed is usually measured in kilometres per hours (km/h) or, in the case, metre per second (m/s).” (Science World 10, Macmillan – P. Stannard and K. Williamson) Hypothesis:

Kinematics 1. A body starts from rest and reaches a speed of 5 m/s after travelling with uniform acceleration in a straight line for 2 s. Calculate the acceleration of the body. 2. A body starts from rest and moves with uniform acceleration of 2m/s2 in a straight line. a. Calculate the velocity after 5s. b. Calculate the distance travelled in 5s. c. Find the time taken for the body to reach 100m from its starting

behave differently if they have: !different masses? !different shapes? Acceleration Due to Gravity " Earth exerts a gravitational force on objects that is attractive (towards Earth’s surface). " Near Earth’s surface, this force produces a constant acceleration downward. # # # To measure this acceleration, we need to slow down the action. Galileo was the first to accurately measure this acceleration due to gravity. By rolling objects down an inclined plane, he slowed the motion

described as equations. Also, we calculated the accelerations of every stage (aup, adown and ahighest). Then the relationship among aup, adown and ahighest was concluded. Finally, the acceleration was measured and was proved from data. Introduction If there is a car launched from the bottom of an incline and it goes up until reaching the highest point, then it reverses its direction. To ensure the safety under this circumstance, the accelerations of every stage need to be

(Henderson, 2015). Giancoli states that the velocity of an object is taken with the magnitude- the numerical value- and the direction of the object (Giancoli, 2009). Therefore, with these two qualities, velocity can be illustrated as a vector. Acceleration occurs when

speed. A cycle run was conducted for three different periods of cycle in which the vehicle was accelerated then hold and decelerated for certain time depending upon the requirement of cycle. Graph 2-A shows the change in velocity upon change in acceleration for three different cycle times. Also the shift of gears during the period can be observed. Graph 2-B illustrates consumption of the fuel during the three different stages. It can be noted that when the velocity was about 50 km/h the fuel consumption

concurrently on a point. As the angle between these forces increases from 0° to 90°, the magnitude of their resultant (1) decreases (2) increases (3) remains the same 2. A car increases its speed from 9.6 m/s to 11.2 m/s in 4.0 s. The average acceleration of the car during this 4.0-second interval is (1) 0.40 m/s2 (3) 2.8 m/s2 (2) 2.4 m/s2 (4) 5.2 m/s2 3. What is the speed of a 2.5-kilogram mass after it has fallen freely from rest through a distance of 12 m? (1) 4.8 m/s (3) 30. m/s