at a velocity of 80 km/h when he sees an old woman crossing the road 45 m away. He immediately steps hard on the brakes to get the maximum acceleration of 7.5 m/square second. how far will he go before stopping? Will he hit the old woman? 3. the time a male bungee jumper if freely falling is 1.5 seconds (a) What is the velocity of the jumper at the end of 1.5 s? (b) how high did he fall? 4. A juggler tosses three balls alternately vertically upward. each ball has an initial velocity of 5
Premium Force Velocity Acceleration
Mass Affecting Final Velocity Name: Anlin Pereira Class: 11C The lab was conducted on 24th September 2014 Teacher: Ms. Timlin Research question: How does the mass (grams) affect the final velocity (m/s) of the toy car on a one meter ramp? Aim: To carry out an investigation to prove that factors such as mass (grams) affects the final velocity (m/s) of an object as it travels a straight line and has a constant acceleration (m/s²). Hypothesis: It is predicted that the mass of the moving object
Premium Classical mechanics Force Mass
the displacement y of the stone? | The stone‚ starting with zero velocity at the top of the building‚ is accelerated downward by gravity. | | Reasoning The upward direction is chosen as the positive direction. The initial velocity v0 of the stone is zero‚ because the stone is dropped from rest. The acceleration due to gravity is negative‚ since it points downward in the negative direction. Solution | 2). After 3.00 s of free-fall‚ what is the velocity v of the stone? Solution 1). A football game
Premium Velocity Kinematics General relativity
Exercises for Chapter 1 Kinematics 1. An impulsive retarding force of 3 seconds duration acts on a particle which is moving with a forward velocity of 60 m/s. The oscilloscope record of the deceleration is shown. Determine the approximate velocity of the particle at t = 9 s. [answer: -58 m/s] 2. A car can decelerate at 0.8 ‘g’ on a certain road. Find the total emergency stopping distance measured from the point where the driver first sights the danger for a speed of 100 km/hr. The time taken for
Premium Velocity Acceleration
1. Two ships P and Q are moving along straight lines with constant velocities. Initially P is at a point O and the position vector of Q relative to O is (6i + 12j) km‚ where i and j are unit vectors directed due east and due north respectively. The ship P is moving with velocity 10j km h–1 and Q is moving with velocity (−8i + 6j) km h−1. At time t hours the position vectors of P and Q relative to O are p km and q km respectively. (a) (b) (c) Find p and q in terms of t. (3) Calculate the distance
Premium Velocity Kinematics Acceleration
conduct cool observations‚ understand scientific terms like ‘acid rain;’ and discover fun facts like how many latex balloons per day can be made from one rubber tree? The book provides instructions on how to conduct experiments‚ explain scientific terms‚ and teaches fun‚ general science facts. For the most part‚ this book does a great job helping students focus on the overall concept of what it means to be a scientist. Who knows‚ after conducting their research‚ your student (like my nephew)‚ might
Premium Education Psychology Developmental psychology
Is a sound knowledge of science and technology essential for a well-educated person in today’s world? The birth of science and technology brought humans out of the Dark Age of superstition into the light of true knowledge. Many were the breakthroughs that have come to our sad world after the amazing breakthroughs of the pioneers of science. Science has given birth to a new way of thinking that has given humans all over the world better lives. The new way of thinking brought with it so many blessings
Free Human Science Scientific method
how is time‚ t related to the inclination of the track? Explain why? Time and position of velocity are interrelated to each other and the height and gravitational pull affects the acceleration of a moving and a free falling object. 3. From the data obtained‚ how would you account the difference between the picket fence’s acceleration and the value of g? The value of the slope of a graph of average velocity versus time will be the acceleration due to gravity of the falling object.
Premium Velocity Acceleration Classical mechanics
S74 assignment Introduction Sir Isaac Newton’s second law describes how the mass of an object changes the way that it moves when acted upon (Jacplus 2013). This means that the more mass that an object has‚ the harder it will be to move. Mass can be calculated using the formula: F=ma * Where: F is the force (N) * m is the mass (kg) * a is the acceleration (m/s/s) If there are two balls and one has a mass of 1kg and the other has a mass of 2kg‚ then the ball that has a larger mass
Free Newton's laws of motion Classical mechanics Mass
aerodynamic lift force and engine’s thrust so that the plane flew with constant velocity. 3. The spring was extended to 3cm under mass of 500g. Determine the spring constant. 4. The distance between two planets of masses 25x1025kg and 30x1025kg is 1012km. Calculate the attractive force between them. 5. The load with mass m=1.5kg is attached to the string of length l=1.5m and moves along a vertical circle with constant velocity v=1.5m/s. What are the maximum and minimum tensions in the string and
Premium Force Drag