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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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?
A 20,000 kg rocket has a rocket motor that generates 3.0 x 105 N of thrust.a. What is the rocket’s initial upward acceleration?b. At an altitude of 5.0 km the rocket’s acceleration hasincreased to 6.0 m/s2. What mass of fuel has it burned?
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1. I'm in an elevator standing on a scale and I'm heading up, but I'm slowing down to a stop. My mass is 71 kg. But the scale I'm standing on tells me my apparent mass is 64 kg. What is my acceleration?
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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…
1. A mass (m) of an object is accelerated by an outside force (F). Ifthe outside force is kept constant, and the mass is doubled, whatis the acceleration?a. halvedc. increased by 122b. doubledd. decreased 4x2. If the mass of an object is kept constant, what is the external netforce and acceleration produceda. equalC. directly proportionalb. not affectedd. inversely proportional3. A 3500 kg vehicle is travelling at a speed of 60 km/h. What will bethe acceleration of the vehicle if it is stopped in 20 s by a constantretarding force? What will be its direction?4. A retarding force reduces the velocity of a 15 kg ball sliding on awell -polished tiles from 15 m/s to 11 m/s in 2 s. Calculate theforce magnitude?
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.
7. The human body can, under certain conditions, withstand an acceleration of 10 g. What net force would produce this acceleration of a 50-kg person? OA. About 500 N OB. About 2500 N C. About 5000 N OD. About 25000 N 1 point
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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?