A 4.6 kg toy race car can move along an x axis. The figure below gives F, of the force acting on the car, which begins at rest at time t = 0. Fx (N) 2.5 t (s) 2 4 -2.5 (a) In unit-vector notation, what is the momentum of the car at t = 2.0 s? p = 5i kg · m/s (b) In unit-vector notation, what is the momentum of the car at t = 9.0 s? p = 16.13 kg · m/s (c) In unit-vector notation, what is the car's velocity at t = 7.0 s? m/s

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
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A 4.6 kg toy race car can move along an x axis. The figure below gives F, of the force acting on the car, which begins at rest at time t = 0.
Fx (N)
5
2.5
t (s)
2
4
-2.5
(a) In unit-vector notation, what is the momentum of the car at t = 2.0 s?
p = 5i
kg · m/s
(b) In unit-vector notation, what is the momentum of the car at t = 9.0 s?
p - 16.13
kg · m/s
(c) In unit-vector notation, what is the car's velocity at t = 7.0 s?
m/s
Transcribed Image Text:A 4.6 kg toy race car can move along an x axis. The figure below gives F, of the force acting on the car, which begins at rest at time t = 0. Fx (N) 5 2.5 t (s) 2 4 -2.5 (a) In unit-vector notation, what is the momentum of the car at t = 2.0 s? p = 5i kg · m/s (b) In unit-vector notation, what is the momentum of the car at t = 9.0 s? p - 16.13 kg · m/s (c) In unit-vector notation, what is the car's velocity at t = 7.0 s? m/s
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