1. A certain force accelerates a 3.2 kg mass by 2.4 m/s2. What would be theacceleration of 1.6 kg mass when the same force acts on it?2. Which has more mass: a kilogram of cotton balls or a kilogram of gold?3. A 63.0-kg sprinter starts a race with an acceleration of 4.20 m/s2. What is the net externalforce on him?4. A cleaner pushes a 4.50-kg laundry cart in such a way that the net external force on it is60.0 N. Calculate the magnitude of its acceleration.5. A soccer player starts from rest and accelerates forward, reaching a velocity of 8.00 m/s in2.50 s.(a) What was his average acceleration?(b) What average force did he exert backward on the ground to achieve this acceleration? Theplayer's mass is 70.0 kg, and air resistance is negligible.

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College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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1.A 150.0g hockey puck is placed on the floor of a bus. The coefficient of kinetic friction between the puck and the floor is 0.654. How far will the puck travel in 1.50 seconds if the bus slows down at a rate of 30.0 m/s 2? Include a free body diagram including any fictional forces. The puck starts from rest.
24. A pickup truck with mass 980 kg is initially at rest. The truck accelerates to a speed of 95 km/hr within a distance of 60 meters. What the direction and size of the force that acts on the truck? a. b. If the truck were carrying a load of 200 kg, what new force would be required to achieve the same acceleration?
3. The mass of a particle is 18 kg. a. What is its weight on Earth? b. What is its weight on the Moon? c. What is its mass on the Moon? d. What is its weight in outer space far from any celestial body? e. What is its mass at this point?
C. a. 1. Alan (m = 50 kg) and Diego (m = 40 kg) are standing on a frictionless ice rink, facing each other, when Alan pushes Diego. Diego moves with an acceleration of 1 m/s². What is the magnitude of Alan's acceleration? a. .8 m/s² b. 1.0 m/s² c. 1.25 m/s² d. Cannot be determined 2. How much horizontal force must a girl apply to a 50 kg cabinet to accelerate it at .4 m/s² along a horizontal surface if there is a friction force of 70 N? b. 50 N e. 90 N 3. Students design an experiment to determine the relationship between mass and acceleration where a cannon fires varying masses. Motion sensors are used to measure the velocity of the cannon ball while it is in the cannon. A graph of one of the trials is shown to the right. The mass is then increased for the next trial while keeping everything else the same. What should the velocity vs. time graph look like for this next trial? The second trial is the dashed line. 120 100 80 60 40 20 0 0 120 100 80 60 40 20 a. 20 N d. 80 N D Velocity…
Newton's Laws SET-UP #1: Object with weight W supported by 2 cords as shown. Quantities to Measure: T₁ = -2.2 NOTE: W = mg _N; 01 = NOTE: T₁x = T₁SinØ₁ T₁y = T₁CosØ, T₂x = T₂Sin0₂ T₂y = T₂CosØ2 02 = T2 40 70 02 1. Draw a pseudo-FBD showing the x and y components of T1 & T2.

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1. A certain force accelerates a 3.2 kg mass by 2.4 m/s2. What would be the acceleration of 1.6 kg mass when the same force acts on it?