COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 4, Problem 31QAP
To determine
In the absence of a net force, an object cannot be
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A box with a mass of 5 kg accelerates its speed in a straight line, increasing it from 5 m/s to 8 m/s, due to the application of an external force acting for a duration of 2.0 s. Calculate the average strength of this force.
according to newton's second law, if there is a net force, there will be....
a. a net acceleration
b. zero velocity
c. a constant velocity
d. no forces acting on the object
}Find the force that must be exerted on a 0.500 kg car to give it an acceleration of 3.00 m/s^2.
a) 0.5 N
b) 15 N
c) 1.5 N
d) 3 N
Chapter 4 Solutions
COLLEGE PHYSICS
Ch. 4 - Prob. 1QAPCh. 4 - Prob. 2QAPCh. 4 - Prob. 3QAPCh. 4 - Prob. 4QAPCh. 4 - Prob. 5QAPCh. 4 - Prob. 6QAPCh. 4 - Prob. 7QAPCh. 4 - Prob. 8QAPCh. 4 - Prob. 9QAPCh. 4 - Prob. 10QAP
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- A net force can produce ___. (3.3) (a) an acceleration (b) a change in velocity magnitude (c) a change in velocity direction (d) all of the precedingarrow_forwardIf a constant, nonzero force is applied to an object, what can you say about the velocity and acceleration of the object?arrow_forwardA 3.00-kg block starts from rest at the top of a 30.0 incline and slides a distance of 2.00 m down the incline in 1.50 s. Find (a) the magnitude of the acceleration of the block, (b) the coefficient of kinetic friction between block and plane, (c) the friction force acting on the block, and (d) the speed of the block after it has slid 2.00 m.arrow_forward
- A service elevator takes a load of garbage, mass 10.0 kg, from a floor of a skyscraper under construction, down to ground level, accelerating downward at a rate of 1.2m/s2 . Find the magnitude of the force the garbage exerts on the floor of the service elevator?arrow_forwardThree forces F1=(62.98i15.80j) N, F2=(23.66i78.05j) N, and F3=(86.64i+233.4j) N are exerted on a particle. The particles mass is 14.23 kg. Find the particles acceleration.arrow_forwardWhy can we neglect forces such as those holding a body together when we apply Newton’s second law?arrow_forward
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- Determine whether each of the following statements is true or false. a. An objects weight is always equal to its mass. b. The force of tension always pushes. c. The magnitude of the sum of the forces on an object is never greater than its weight. Explain.arrow_forwardAn object experiences no acceleration. Which of the following cannot be true for the object? (a) A single force acts on the object. (b) No forces act on the object. (c) Forces act on the object, but the forces cancel.arrow_forwardAn object with a mass of 2.0 kg accelerates 2.0 m/s? when an unknown force is applied to it. What is the amount of the force?arrow_forward
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