COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 2, Problem 60QAP
To determine
The distance travelled by sperm whale.
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3. Another rocket lifts off and accelerates upward at a steady 3.30 m/s2• When it is 235 mabove the launch pad, it discards a used fuel canister. Once it is disconnected, the only forceacting on the canister is gravity (ignore air resistance).(a.} How high is the rocket when the canister hits the launch pad?(b.) What total distance did the canister travel between its release and its crash onto thelaunch pad?
Example 3
• A particle moves along the x-axis so that at any t≥ 0 its velocity is given by v(t) = t² - 16t+4. What is the velocity
of the particle when its acceleration is zero.
..
• Figure EX2.31 shows the acceleration-versus-time graph of a particle moving along
the x-axis. Its initial velocity is Uoz = 8.0 m/s at to = 0 s. What is the particle's velocity at
t = 4.0 s?
Figure EX2.31
4, (m/s²)
4-
2-
Chapter 2 Solutions
COLLEGE PHYSICS
Ch. 2 - Prob. 1QAPCh. 2 - Prob. 2QAPCh. 2 - Prob. 3QAPCh. 2 - Prob. 4QAPCh. 2 - Prob. 5QAPCh. 2 - Prob. 6QAPCh. 2 - Prob. 7QAPCh. 2 - Prob. 8QAPCh. 2 - Prob. 9QAPCh. 2 - Prob. 10QAP
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- There is a distinction between average speed and the magnitude of average velocity. Give an example fiat illustrates the difference between these two quantities.arrow_forwardWhen the pilot reverses the propeller in a boat moving north, the boat moves with an acceleration directed south. Assume the acceleration of the boat remains constant in magnitude and direction. What happens to the boat? (a) It eventually stops and remains stopped, (b) It eventually stops and then speeds up in the forward direction, (c) It eventually stops and then speeds up in the reverse direction, (d) It never stopsarrow_forwardCan an object be increasing in speed as its acceleration decreases? If so, give an example. If not, explain.arrow_forward
- Can an object have an acceleration of zero and a velocity that is not zero? Explain why or give an example. Can an object have a velocity of zero and an acceleration that is not zero? Explain why or give an example.arrow_forwardUniversity Physics 1 - Kinematics; Can an object have a velocity with zero acceleration? Can an object have acceleration with zero velocity? Explain why or why not.arrow_forwardQ1) While a car is moving with a speed 108 m on a straight road the driver sees a truck which enters the road 75m ahead. The driver applies full brake 0.5s after s/he observes the truck, however the car hits the truck with a speed of 50m. Then what would be the maximum initial speed of car in when the driver observes the truck in order that the car does not hit the truck with all other conditions are the same?arrow_forward
- Linear Kinematics Equations (constant acceleration) The head of a woodpecker is moving forward at a speed of 7.49 m/s when the beak makes first contact with a tree limb. The beak stops after penetrating the limb by 1.87mm. Assuming the acceleration to be constant, find the acceleration in terms of garrow_forwardWhat is the distinction between speed and velocity? Describe a situation in which an object's speed is constant but its velocity is not.arrow_forward55. •Use the following velocity versus time graph (Figure 2-25) for a kangaroo rat running in its burrow to determine its displacement for (a) 0 to 5 s, (b) 0 to 10 s, (c) 10 to 25 s, and (d) 0 to 35 s. SSM 0.3 0.25 - 0.2 – 0.15 - 0.1- 0.05 - 10 20 30 40 -0.05 - Time (ms) -0.01 Velocity (m/s)arrow_forward
- 2. Is it possible for a body moving on a circular track to have zero acceleration? Explain vividly if Yes or Noarrow_forwardLinear Motion A car goes from 0 m/s to 80 m/s south in 8 seconds along a flat road. (a) What is the magnitude of its average acceleration for the first 8 seconds? (b) Assuming a constant acceleration, a, what is its average speed for the first 8 seconds? (c) How far did it travel in the first 8 seconds? A car's velocity goes from +24 m/s to -20 m/s at a constant acceleration, à, in 10 seconds along a flat straight road. (a) What is its change in velocity? (b) What is its average acceleration, à, for these 10 seconds? (c) What is its average velocity for these 10 s? (d) What was its displacement, A, for these 10 s? (e) Assuming that t = 0 s when the car is going +24 m/s at the beginning of the 10 s interval, at what time did the car stop moving? (f) What distance, Ax, did it travel in these 10 seconds? (g) What was its average speed in the first 10s?arrow_forward= 4.5 km 1-5 km Avera (a) Average velocity = 2-25 km/h (40/60) h 4.5 km (b) Average speed = = 6-75 km/h %3D (40/60) h Example 6 On a 80 km track, a train travels 40 km with a uniform speed of 30 km h-l. How fast must the train travel the next 40 km so as to have average speed 40 km h-l for the entire trip ? Ex at 8.00 aarrow_forward
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